Operating Instructions

2. Press the sides and the top part of the back cover down to lock the
cover into place.
You will hear a click when the back cover is locked in place.
SIM card
The SIM card contains your phone number, service details, and memory for
storing phonebook contacts and/or text messages.
Inserting the SIM card
HTC Thunderbolt uses a regular SIM (miniSIM). If you have a
microSIM card, make sure you insert it with a SIM adapter. Do not
directly insert your microSIM into HTC Thunderbolt.
1. Take the back cover off.
Getting started 17