My G1 phone wont factory reset itself and i dont know what to do, im not sure if i can still return my phone and get a new one because i had it since March 13,2009

Try hard resetting it once. But make sure you have enough charge. But this will erase everything.

To perform a Hard Reset

1. Turn the phone off. If it is frozen, take the battery out and put it back in.
2. Hold the Home and Power keys down at same time for about 25 seconds. You will see a yellow triangle screen with exclamation point in the middle.
3. Press Alt+L.
4. Press Alt+W for a factory reset.
5. Press the Home and Back keys again for about 25 seconds.

http://www.resetcellphone.com/solution/HTC/g1

got to setting in the menu at the home screen. then go to sd and phone storage. go then to the bottom of the menu and hit reset factory data and it will take u thru the set up !!!

No, unfortunately it wont! you will need an unlock code to unlock or sim lock free your phone! you can get your g1 htc unlock code from here.
Let me know if you need more help.

If it keeps rebooting itself at the G1 and Android screen, you might want to factory reset the phone and clear all the data as there may be a virus. To do this, when turning on the phone, hold the home button and the power button even while the G1 screen comes up. Keep holding these until an image with a triangle comes up. You will then wait 5-10 seconds, and press the home and power button again together. This will bring up the OS screen, and provide you 4 options. One of these options is to wipe and restore to factory. Do this and your phone should work fine after you reboot again.

did you find a solution to this?? im having the same proble =/

i entered my first name and last name and the email so i can create a new account and it says i need network connection.

You have to press the house, menu, and end key at the same time ...wait until a triangle shows up on the screen then it will give you the options , this resets everything so save contacts, picture and other things youd like to keep

Well try to get your hands on either a second G1 phone or a multimeter to rule out a battery issue. If you take a charged battery from another G1 and it still doesn't turn on you will have a logic board issue. With a multimeter you can measure the battery directly, if the phones doesn't turn on if the voltage is over 3.7V, you'll have a logic board issue as well. Within one year T-Mobile should give you a replacement. If you can't get a replacement under warranty there is both an T-Mobile G1 Repair Guide and a third party T-Mobile G1 Repair Service, If you try a self-repair make sure you feel comfortable with opening devices that are not meant to be user serviceable.

I want to run gprs into my Blackberry 8100.but the network is locked it is grameen phone network.How can I get this/

you need to perform a hard reset which will essentially erase the phone to factory.

• Power off the G1
• Hold Home Key + End key for 20 seconds or till you see a triangle with an exclamation point and a picture of the G1
• Open the QWERTY keyboard and hit Alt+W