Blackberry 8820 Cracked! External WIFI Antenna "How To"
Before you read on, you should understand the risks of doing what I have done with my phone. By opening your phone, you will most likely instantly void your warranty. There is no way around it, there will be signs that it has been opened. Trust me. If you don't know what you are doing, you will most likely break your phone. Even if you know what you are doing, you probably should not be messing with it like I did unless breaking your phone is not a big deal to you. Personally, I don't care much if I break it. I'll buy a new one and turn my old one into a development board or something else cool like that!
Some things you NEED to know:
1.) Do not solder to the board. It is a heat sensitive multi-layered sandwiched board and any heat will ruin it. It would take a very highly skilled expert at soldering to solder to where the antenna connection is located. I am not this skilled, my hand is not steady enough, and I do not have the proper soldering iron and solder.
2.) You will void your warranty by taking apart your phone
3.) There is a good chance you will break your phone to the point that it is unrepairable
4.) This is not a beginner project and knowledge of proper electronics handling is needed.
5.) A static free environment is a must as any static discharge from you to the board can destroy it.
After much trial and error, I have officially found where the WIFI antenna is located in the Blackberry 8820. I have also found a simple way to disable this antenna and connect an external antenna with no soldering to the board required. Currently I am waiting on some W.FL, U.FL, and MC Card connectors to mount to the case so an antenna can be attached through a drilled hole.
This is what the phone looks like completely taken apart:
http://img211.imageshack.us/img211/5...7173thmif6.jpg
http://img210.imageshack.us/img210/3...7175thmvp6.jpg
http://img258.imageshack.us/img258/3...7184thmod4.jpg
http://img266.imageshack.us/img266/4...7185thmdv9.jpg
Closeup of the board
http://img522.imageshack.us/img522/6...7181thmxs5.jpg
http://img520.imageshack.us/img520/6...7182thmee3.jpg
http://img208.imageshack.us/img208/7...7183thmpo6.jpg
http://img185.imageshack.us/img185/6...7188thmgl6.jpg
Closeup of the PCB for EDGE cell service on T-Mobile
http://img187.imageshack.us/img187/9...7187thmpp7.jpg
Scotch tape has been placed over the terminals where the antenna makes contact to. By doing this, the built in antenna cannot interfere with a new external antenna.
http://img120.imageshack.us/img120/3...7195thmxl8.jpg