SamsungメーカーSGH-E720Sの使用説明書/サービス説明書
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World Wide Web http://www .samsungmobile.com Printed in Korea Code No.:GH68-06793A English. 04/2005. Rev 1.0 * Dependin g on the software in stalle d or your service pro vider , some of the descriptions in this manual may not match your phone.
SGH-E720C User’s Manual.
Use road safety at all tim es Do not use a hand-held phone while driving. Park the vehicle first. Switch off the phone whe n refuelling Do not use the phone at a refuelling point (service station) or near f uels or chemicals. Switc h off in an a ircraft Wireless phones can cause interference.
Important safety pr ecautions 1 Interference All wireless phones may be subject to interference, which could affect their performance. Be aware of special regulations Meet any special regulations in force in any area and always switch off your phone whenever it is forbidden to use it, or when it may cause interf erence or danger .
2 About this Guide This User’s Guide provides you with condensed information about how to use your phone. T o quickly learn the basics for your ph one, please refer to “G et started” and “Ste p outside the phone.
3 Special featur es of you r phone • Get Person al with Photo Calle r ID See who’ s calling you when their very own photo displays. • Name Card Create name cards with your number and pro file. Whenever introducing yourself to others, use this convenient electronic name card.
4 Contents Unpack 6 Make sure you have e ach item Your phone 6 Buttons, features, and locations Get started 7 First steps to operate your phone Install and charge the phone .............. ............. ........ 7 Power on or off ......................
5 Overview of menu functions T o ac cess Menu mode, press < Menu > in Idle mode. 1 Call records p.32 1 Current c ontacts 2 Missed calls 3 Dialled calls 4 Rece ived calls 5 Delete all 6 Call time 7 Call co st * p.32 p.32 p.32 p.
6 Unpack Make sure you have each item Y ou can obtain various accessories from your local Samsung dealer . Phone Tr a v e l c h a r g e r The items su pplied with your phone and the accessor ies at your Samsung dealer may vary , depending on your country or se rvice provi der .
7 Get started Get started First steps to operate your phone SIM card information When you subscribe to a cellular network, you receive a plug-in SIM (Subscriber Identity Module) card loaded with your subscripti on details, such as your PIN, and available optional services.
8 Get started Low battery indicator When the battery is low: • a warning tone sounds, • the battery low message displays, and • the empty battery icon blinks. If the battery lev el becomes too low , the phone automatically turns off . R echarge your battery .
9 Get started Keys and display Perform the function indicated on the bottom line of the d isplay . In Idle mode, access y our favourite menus directly . p. 78 In Menu mode, scroll through the menu options . In Idle mode, la unch the W ireless Application Protocol (WAP) browser .
10 Get started Display Layout Icons * Rece ived signal strength Call in progress Out of your service area; you cannot send or receive calls Alarm se t New message New e-mail message Text and graphics display messages, instructions, and informatio n you ente r .
11 Get started Access menu functions Use the so ft keys The roles o f the soft keys vary depending on the function you are using. The bottom line of the displa y indicates th eir current role. Press the left soft key to access Menu mode. Press the r ight soft key to access Contacts list in the Phonebook menu .
12 Get started Customise your phone 1. In Idle mode, press < Menu > and select Settings → Phone settings → Language . 2. Select a language. 1. In Idle mode, press < Menu > and select Settings → Sound settings → Incoming call → Rington e .
13 Get started Y ou can switch to Quiet mode to avoid disturbing other people with your phone sound. Press and hold [ ] in Idle mode. Y ou can use the Navigation keys as shortcut keys to acc ess specific menus directly from Idle mode. T o assign a shortcut menu: 1.
14 Make/Answer calls S tep out side the phone Begin with your camera, m usic, and other special features Use camera 1. In Idle mode, enter an area code and phone number . 2. Press [] . 3. T o end the call, press [] . 1. When the phone is ringing, press [] .
15 S tep outside the phone Play MP3s 1. In Capture mode, press the left soft key and sel ect Go to photos . 2. Press [L eft] or [Right] to select a photo category . 3. Select a photo you want. 1. In Idle mode, press and hold [ ] to turn on the camera.
16 S tep outside the phone 1. In Idle mode, press < Menu > and select Applications → MP3 player . 2. Press < Options > and se lect Add to playlist → Add all or Add files . 3. For Add files , select specific files an d press < Select >.
17 S tep outside the phone Use Phonebook T o the p hone’s memor y 1. In Idle mo de, enter a phone number and press < Options >. 2. Select Save contact → Phone → a number type. 3. Specify the contact information: First name, Last name, Mobile, Home, Office, F ax, Ot her , Email , Caller ID, Ringtone, Group, and Memo.
18 S tep outside the phone Browse the web Using a built-in W AP (Wireless Access Protocol) browser , you can get easy access to the wireless web to get a va riety of up-to-date services and information and to enjoy download of web conte nt. Send messages In Idle mode, pr ess [ ].
19 S tep outside the phone 4. Select Picture&Video or Sound and add a media file. For Picture&Video , select Add image or Add video to add a photo or video clip. For Sound , select Add sound to add a sound clip. 5. Select Message . 6. Enter th e message text and press [ ].
20 S tep outside the phone View messages - When a notification appears: 1. Press < View >. 2. Select a m essage from the Inbox. From the Inbox: 1. In Idle mode, press < Menu > and select Messages → My messages → Inbox . 2. Select a m essage.
21 S tep outside the phone Use Bluetooth Y our phone is equipped with Bluetooth technology which enables you to connect the phone wirelessly to other Bluetooth devices and exchange data with them, talk hands-free, or control the phone r emotely . In Idle mode, pr ess < Menu > and select Settings → Bluetoot h → Activation → On .
22 Enter text Pinyin, PTI, Stroke, Quick English, English, Number, and Symbolic mode Y ou can enter text for some features such as messaging, Phonebook, or Calendar , using Pinyin, PTI,and Stroke modes for Chinese, and Quick English and English modes for English.
Enter text 23 Entering characters in Piny in mode 1. Press th e keys corresponding to the phonetic spelling, referring to the letters printed on the keys. Example : T o enter “ , ” press [ 6 ] and [ 4 ] to enter “ni. ” 2. press [Lef t] or [Right] to select alternative pinyins for th e keys yo u have pr esse d.
24 Enter text 1. Press [ ] t o add the word or the ph ase you want to the PTI dictio nary . 2. Enter the word or the phase y ou want. 3. Press the left soft key to insert it into your text. Using Chinese Stroke mode This mode allows you to enter individual Chinese strokes, in written orde r , fr om top to bottom, and from left to right.
Enter text 25 Tips for Stroke mode • Press [ ] to insert a space between characters. • Press [Left] or [Right] to move the cu rsor . •P r e s s [ C ] to clear letters one by one.
26 Enter text Using English mode Press the appropriate key until the character you wa nt appears on the screen. Tips for using English mode • T o enter the same lett er twice or to enter a different le tter on the same k ey , w ait for the cursor to mov e to the right a utomatically , or press [Right].
Call functions 27 Call functions Advanced calling features Making a cal l 1. In Idle mode, e nter the area code and phone number . 2. Press [ ]. Making an internationa l call 1. In Idle mode , press and hold [ 0 ]. The + character appears. 2. Enter the country code, area code, and phone number , then press [ ].
28 Answering a call When you receive an incoming call, the phone rings and displays the incoming call image. Press < Accept > or [ ] to answer th e call. Tips for answering a call • When Anykey answer in the Extra settings menu is active, you can press any k ey , except for < Reject > or [ ].
Call functions 29 Placing a call on hold/Retrieving Press < Hold > or < Retrieve > to place a call on hold or retrieve the ca ll. Making a second call Y ou can make another call if your network supports it. 1. Press < Hold > to put the call on hold.
30 Call functions Using the menu options Y ou can access Menu mode and use menu funct ions. Press < Options > and select Menu . Switching off the microphone (Mute m ode) Y ou can temporarily switch off your phone’s microphone so that the person on the ph one cannot hear you.
Call functions 31 Using SIM services The SIM service menu is av ail able if you use a SIM card in your phone. A SIM ca rd provides servi ces such as news, weathe r , sports, entertainme nt, and location services. For details, see your SIM card instructions or contact your service provider .
32 Menu functions Menu functions All menu options listed Call records (Menu 1) Use this menu to view the calls you have dialled, received, or missed, the length of your calls, and the cost of your calls. T o access this m enu, press < Menu > in Idle mode and select Call records .
33 Delete all (Menu 1.5) Use this menu to delete all of the records in each cal l type. 1. Press [ ] to check the call type(s ) to be cleared. 2. Press < Delete >. 3. Press < Yes > to confirm the deletion. Call time (Menu 1.6) This menu displays the time log for calls made and received.
34 Menu functions Phonebook (Menu 2) Y ou can store phone numbers on your SIM card an d in your phone’ s memory . The SIM card and phone’s memory are physically separ ate, but they are used as a single entity called Phonebook. T o access this m enu, press < Menu > in Idle mode and select Phonebook .
Menu functions Phonebook (Menu 2) 35 Add new contact (Menu 2. 2) Use this menu to add a new contact to Phonebook. Storing a number in the phone’s memory 1. Selec t Phone . 2. Change the settings or en ter informa tion about the contact by pressing [Down].
36 Menu functions Adding members to a calle r group 1. Select a gr oup. 2. Press < Add >. The list of contacts stored in your phone’s memory is di splayed. 3. Press [ ] to select specific contact s you want to add to the selected group and press < Options > and select Select .
Menu functions Phonebook (Menu 2) 37 My name card (Menu 2.5) Use this menu to create a name card and send it to other people. Saving your name card The procedure for creating your name card is the same as th e one for saving a phone number in the phone ’s memory .
38 Menu functions Service number (Menu 2.8) This menu is available if your SIM card supports Service Dialling Numbers (SDN). Use this menu to view the li st of SDNs a ssigned by your service provider , including emergency numbers, directory enquiries, and voice mail numbers.
Menu functions Phonebook (Menu 2) 39 Accessing Ja va settings Y ou can select a connection profile for accessing Java services . From the Java world menu, select Settings and then a profile. Checking memory status Y ou can view the amount of total memory for the Java games as well as the amount of available and used memory .
40 Menu functions Playing music files From the MP3 pl ayer scre en, press [ ]. During playback, use the following keys: Using MP3 file options From the MP3 player screen, press < Options > to access the following options: • Play : begin playback.
Menu functions Phonebook (Menu 2) 41 Accessing the play list 1. From the M P3 player screen, press < Options > and select Open playlist to access the play list. 2. Press < Option s > to access the f ollowing options: • Play : play the currentl y selected file.
42 Menu functions • Send via : send the voice mem o via MMS, e-mail, or Bluetooth. • Delete : delete the v oice memo. • Rename : chan ge the na me of the voice me mo. • Protection : protect the vo ice memo from being deleted. • Properties : view the pr operti es of th e voice memo.
Menu functions Phonebook (Menu 2) 43 Using voice memo options From the Voice recorder screen, pres s < Option s > to access the following options: • Record : record a new voice memo. • Go to voice list : go to the list of voice memos you have recorded .
44 Menu functions Alarm (Menu 3.5) Use this menu to set alarms to sound at specific times. Setting an alarm 1. Select the type of alarm. 2. Press [Le ft] or [Right] to select On on the Alarm line and press [Down]. 3. Enter the tim e for the alarm to sound and press [Down].
Menu functions Phonebook (Menu 2) 45 • Sync category : select the applications you want to synchronise. • Sync type : select a synchronisation type. • Sync prot ocol : select a connection method. 3. Press < Save > to sav e the profile. Starting synchronisation 1.
46 Menu functions Converte r (Menu 3.8) Use this menu for common conver sions, such as currency and temper ature. 1. Select a conve rter . 2. Press [Left] or [Right] to select the original unit and press [Down]. 3. Enter the v alue to be converted and press [Down].
Menu functions Browser (Menu 4) 47 2. Press [ ] to check an interv al. Y ou can repeat this step for a total of 4 inter vals. 3. T o reset the stopwa tch, press < Reset >.
48 Menu functions • Reloa d : reload the current page. • Home : go back to the home page. • Goto URL : enter a URL address manually . • Show URL : display the UR L address of the current web page. Y ou can also set the current page as the home page for the W AP browser or a bookmark.
Menu functions Messages (Menu 5) 49 WAP profile (Menu 4.4) Use this menu to sel ect a connection profi le for accessing the W AP browser . Clear cache (Menu 4.5 ) Use this menu to clear the cache, a temporary memory that stores recently accessed web pages.
50 Menu functions • Input method : change the text input mode. 3. When you ha ve fini shed, press < Options > and select Save and send or Send only . 4. Enter a destination number . T o send the mess age to more than one recipient, press [Down] and fill in additional destin ation fields.
Menu functions Messages (Menu 5) 51 • Clear subject / message : clear t he subje ct or text. • Remov e media / sound : remove an added item. 5. When you ha ve fini shed, press < Options > and select Send . 6. Enter a phone number or e-mail address.
52 Menu functions • Send : send the e-mail. • Save to : save the m essage in the Drafts box or one of the folders you ha ve created. • Remove subject / message : clear the subjec t or text. • Remove attachment : delete the selected attachme nt.
Menu functions Messages (Menu 5) 53 Viewing a message in Inbox The follo wing icons m ay appear o n the message list; depending on the message type or status, icons may var y: • S M S • M M S • MMS notification; indica tes that MMS has been retrie ving from the serv er and indicates that MMS has been failed to retrieve .
54 Menu functions • Delete : delete the message. • Move to ph one / SIM : move the message between the SIM card and the phone’ s memory . • Cut address : extract U RLs, e-mail addresses, or phone numbers from the me ssage. • Cut media : save m edia content from the message into your phone’s m emory .
Menu functions Messages (Menu 5) 55 Delivery report m essages • Cut address : extract URL, e-mail addresses, or phone numbers from the me ssage. • Delete : delete the message. • Protection : protect the message from being deleted. Drafts (Menu 5.
56 Menu functions Sent (Menu 5. 2.4) This folder stores messages that you have sent. While viewing a mess age or from the message list, press < Options > to access the following opti ons: • View : open the message. • Send : send the message.
Menu functions Messages (Menu 5) 57 3. Scroll to an e-mail or header and press [ ]. 4. If the e-mail has more than one page, press [ / ] to scroll through pages one by one. Press [Left] or [Right] to move to the f irst or last page. 5. Selec t an attached file to view or play it.
58 Menu functions Using folder options On the folder list, press < Option s > to access the following options: • Open : open the fo lder . • Add folder : add a new folder . • Rename folder : change the name of the folder . • Delete : delete the selec ted folder .
Menu functions Messages (Menu 5) 59 • Current profile : select a profile . • Profile settings : set the follow ing properties in a profile: Service centre : store or chang e the number of your message centre. Default de stinat ion : enter the de fault destination.
60 Menu functions Home reception : determine if your p hone retrieve s new messag es automatically w hen you are in your home service area. Roaming reception : determ ine if your phone retrieve s new messag es automatically w hen you are roaming in another network.
Menu functions Messages (Menu 5) 61 • Receive settings : set up the following options f or receiving an e-mail: Check interval : determine how often the phone checks the serv er for incoming e-mails. If you se t this option to Do not notif y , you can use the Check new Email feature to check y our e-mail manually .
62 Menu functions • APOP login : connect to the server by using the APOP login scheme when this option is selected. These options are available when the protocol type is IMAP4 : • IMAP4 server : enter the IP address or dom ain name of the server that receives your e-mail.
Menu functions Messages (Menu 5) 63 File manager (Menu 6) The File manager menu allows you to access images, videos, music files, and s ound files stored in the phone ’s memory . T o access this m enu, press < Menu > in Idle mode and select File manager .
64 Menu functions • Rename : change the name o f the video clip. • Move to Favourite videos : go to the Favourite videos folder . • Share for blueto oth : set whether or not to prevent this file from being accessed from other Bluetooth devices. • Protection : protect the video clip from being deleted.
Menu functions Messages (Menu 5) 65 Using sound options While viewing the sound list, press < Options > to access the following options: • Play : play t he sound file. • Send via : send the file via MMS, e-mail, or Bluetooth. • Set as : set the file as your ring tone or as a caller alert mel ody for a Phonebook ent ry .
66 Menu functions Calendar (Menu 7) The calendar feature enables you to keep track of your schedule and to-do lis t, to view missed alarm events, and to make a memo.
Menu functions Calendar (Menu 7) 67 3. Enter information or change the sett ings in the followin g entry fields: • Subject : enter the title of the event. • Details : enter ev ent details. • Start date and Start time : enter the starting date and time for the event.
68 Menu functions Entering a memo 1. Select a date on the calendar . 2. Press < Option s > and select Create → Memo . 3. Enter a memo and press [ ]. 4. Press < Option s > and select Save . Entering a to-do item 1. Select a date on the calendar .
Menu functions Calendar (Menu 7) 69 Viewing an event in different mode By default, the calendar appear s in Month view mode. Press < Options > and select View mode to change the mode. Day view Y ou can view events for the selected date. Select an event to view its details.
70 Menu functions Camera (Menu 8) Y ou can use the camera module em bedded in your phone to take photos and record videos. T o access this m enu, press < Menu > in Idle mode and select Camera , or press and hold [ ] . Taking a photo Y ou can take photos in various modes using the phone.
Menu functions Camera (Menu 8) 71 • Shooting mode : take a photo in the following modes: Single shot : take a photo in normal mode. Multi s hot : take a serie s of action stills. Select the number of photos the camera will take. Mosaic shot : take s everal s tills and sav e them in one fr ame.
72 Menu functions Using phot o option s After saving a p hoto, press < Options > to access the following options: • Take anot her : return to Capture mode . • Send via : send the photo via MMS, e-mail, or Bluetooth. • Set as : set the photo as your wa ll paper for the displays or as a caller ID image for a Phonebook entry .
Menu functions Camera (Menu 8) 73 While viewing a photo or the photo list, press < Options > to access th e following options: • List : return the s creen to the phot o list. • View : view the phot o on the full screen. • Send via : send the photo via M MS, e-mail, or Bluetooth.
74 Menu functions Recording a video Y ou can record a video of what is displayed on the camera scre en and save it. 1. In Capture mode, press [ 1 ]. 2. Aim the camera lens at the subject to adju st the image. • Press the left soft key to access the cam era options.
Menu functions Camera (Menu 8) 75 Audio record : record audi o with a video clip. • Short cuts : view the functions of the keys you can use. Using the keypad in Record mode Y ou can use the keypad t.
76 Menu functions • Set as wallpaper : set the vide o clip, if save d for adding it to MMS messages or e-mails, as your wallpaper for the idle screen. • Delete : delete the video clip. • Rename : change the name o f the video clip. • Go to videos : go to the Video clips folder .
Menu functions Camera (Menu 8) 77 • Properties : view the pr operties of the video clip. Recording a video with the phone closed 1. Press a nd hold [ ] . 2. If necessary , press [ ] to highlight . 3. Adjust the image by aiming the camera lens at the subject.
78 Menu functions Phone settings (Menu 9.2) Many different features of your phone’s system can be customised to suit y our preferences. Language (Menu 9. 2.1) Use this menu to change the language of the display . Greeting mes sage (Menu 9.2.2) Use this menu to enter the greeting tha t is displayed briefly when the phone is switched on.
Menu functions Camera (Menu 8) 79 Display settings (Menu 9.3) Use this menu to change settings for the display and light. Wallpaper (Menu 9.3.1) Y ou can set up the idle screen on both displays. • Main d isplay : select an im age or video clip to be displayed on the main display .
80 Menu functions Dialing font colour (Menu 9.3.5) Use this menu to select the font c olour when entering a phone number for dialling. Sound settings (Menu 9.4) Use this menu to customise various sound settings. Incom ing ca ll (Menu 9.4.1) Use this menu to select a volume and alert type for incoming ca lls.
Menu functions Camera (Menu 8) 81 Folder tone (Menu 9.4.5) Use this men u to select the tone that the phone sounds when you open or close the phone. Quiet mode (Menu 9.4.6) Use this men u to set how the phon e acts to alert yo u to a specific event in Quiet mode, instead of making sounds.
82 Menu functions • No reply : dive rt c all s when you do not a nswe r the phone. • Unreachable : divert calls when you are not in an area co vered by y our service pr ovider or when your phone is switched off . • Cancel all : cancel all call diverting opti ons.
Menu functions Camera (Menu 8) 83 Call waiting (Menu 9.5.3) This network service informs you when someone is trying to reach you while you are on another call. 1. Select the type of calls to whi ch call waiting option will apply . 2. Selec t Activate and press < Select >.
84 Menu functions • Voice server numb er : enter the v oice mail server number . Closed user group (Menu 9.5. 7) Use this menu to set incoming and outgoing cal ls to be restricted to a sele cted user group. F or details about how to create a closed user group, contact your service provider .
Menu functions Camera (Menu 8) 85 Using the Bluetooth feature, you can connect the phone wirelessly to othe r Bl uetooth devices and exchange data with them, talk hands-free, or control the phone remotely . Bluetooth technology allows free wireless co nnections between all Bluetooth-comp li ant devices withi n a range of 10 meters.
86 Menu functions The colour of the icon indicates the st atus of the the device : • Grey for unpaired devices • Blue for paired devices • R ed for devices that are currently connected to your phone 3. Select a device. 4. Enter a Bluetooth PIN code and press < OK >.
Menu functions Camera (Menu 8) 87 Sending data via Bluetooth 1. Activ ate the Blue tooth feature. 2. Select the application in which the item you want to send is stored. 3. Scr oll to the item y ou want an d press < Options >. 4. Selec t Send via → Bluetooth .
88 Menu functions Phone lock (Menu 9.7. 3) This feature locks the phone from unauthorised use. When this feature is enabled, you must enter a 4- to 8-digit phone password each time the phone is switched on. The password is preset to 00000000 . T o cha nge the password, use the Change password menu.
Menu functions Camera (Menu 8) 89 Creating a profile 1. Press < New > and spe cify followin g informatio n: • Profile name : enter a profile name. • Home U RL : enter the address of the WAP homepage of your service provider . • Proxy : activ ate or deactiva te the proxy serv er .
90 Solve pr oblems Reset settings (Menu 9. 9) Use this menu to reset the phone settings, display settings, and sound settings individually . Y ou can also reset all the settings in your phone at the same time. 1. Press [ ] to check the se tting category(ies) to be reset.
91 “Enter PU K” • The PI N code h as bee n entered in correctly three times in succession, and the phone is now blocked. Enter th e PUK supplied by your serv ice provider . “No Service,” “Ne twork Failure,” or “Not Done” displays • The network connection has been lost.
92 Health and safety • T ry moving the phone slightly or moving closer to a window if you are in a building. No number is dialled when you re-call a Phonebook entry • Use the Contacts list feature to ensure t he number has been stored co rrectly .
93 SAR tests are conduct ed using standard operating positions with the phone tr ansmitting at its highest certified power level in all tested frequency bands. Although the SAR is determined at the highest certifi ed power level, the actual SAR level of the phone while operating can be well below the maxim u m value.
94 Health and safety • Extreme temperatures will affect the charging capacity of your battery: it may require cooling or warming first. • Do not leave the battery in hot or cold places because the capacity and lifetime of the battery will be reduced.
Health and safety information 95 Electronic devices Most modern electronic equipment is shielded from radio frequency (RF) signals. Ho wever , certain electronic equipment may not be shielded against the RF signals from your wireless phone. Consult the manufacturer to discuss alternatives.
96 Health and safety Potentially explosive enviro nments Switch off your phone w hen in any area with a potentially explosive atmosphere, and obey all signs and i nstructions. Sparks in such areas could cause an ex plosion or fire resulting in bodily injury or even death.
Health and safety information 97 Other important safety information • Only qualif ied personnel should service the phone or install the phone in a vehicle. F aulty installation or service may be dangerous an d may invalidate any warranty applicable to the device.
98 Health and safety devices, damage batteries, and w arp or melt certain plastics. • Do not store t he phone in cold areas. When the phone warms up to its normal operating temper ature, moisture can form inside the phone, which m ay damage the phone’s electronic circuit boards.
Health and safety information 99.
デバイスSamsung SGH-E720Sの購入後に（又は購入する前であっても）重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります：
Samsung SGH-E720Sをまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはSamsung SGH-E720Sの技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Samsung SGH-E720Sの取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Samsung SGH-E720Sで得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Samsung SGH-E720Sを既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はSamsung SGH-E720Sの不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Samsung SGH-E720Sに関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちSamsung SGH-E720Sデバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。
