Hi, need your help, sorry, my english is really bad))). Here's my problem: when i switch my iPhone 1st gen to sleep mode it always turn off after 1-2 minutes. Then i installed INSOMNIA from cydia and now if i turn insomnia on the phone works fine, but not too long, only about 24 hours, then i need to charge it. So, i thought that the mainboard or commboard are almost dead, and tried to change it from another phone, but didn't help. Can you help me, what's wrong with it? maybe flex?