Sony Ericsson T28 World User Guide - Page 6
The Battery, Attaching the Battery to Your Phone, When to Charge the Battery - ericsson unlock code
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EricssonNoMtofboilreCCoommmmerucniiaclatUisoens AB If your PIN is entered incorrectly three times in a row, the SIM card is blocked. If this happens, you can unlock it by using your PUK (Personal Unblocking Key code), which you also get from your operator. The Battery Your T28 WORLD comes with a lithium battery. The battery is not charged when you buy your phone, but there may be enough power to switch the phone on. We recommend that you charge the battery up to three hours before you use the phone for the first time. Attaching the Battery to Your Phone • Place the battery on the back of the phone and push until you hear a click. When to Charge the Battery The battery that comes with your phone can be charged whenever you wish without affecting its performance. You can also charge the battery when the phone is off. To remind you that you will soon need to charge the battery or replace it with a charged one: • an alarm signal (a short beep) sounds and the message Attention! Battery low appears in the display • the indicator light on top of the phone starts flashing red If you have an Ericsson-approved battery, you can check the remaining talk and standby times in the Status menu by sliding the volume key upwards or downwards in standby mode. You can move downwards in the menu by pressing d. The remaining standby and talk times depend on the type of battery you use and your position in the network. Please note that these times are approximate and you may have 20% less time than is shown in the display. Note! The phone turns itself off when the battery can no longer power it satisfactorily. 6 Preparing Your Phone for Use