Hi i have the htc dream phone n the keypad is locked and i forgot the pattern. How can i reset it?

Reset your pattern (Android 4.4 or lower only)

1. After you've tried to unlock your phone multiple times, you'll see "Forgot pattern." Tap Forgot pattern.
2. Enter the Google Account username and password you previously added to your phone.
3. Reset your screen lock. Learn how to set a screen lock.

https://support.google.com/android/answer/7663172?hl=en

it depends if the phone is a cdma or gsm. but you might take a look at this link and see if it helps How to SIM unlock htc evo 3D

do a factory reset:

1. With the HTC Wildfire turned off, press and hold the VOLUME DOWN button, and then briefly press the POWER button.
2. Wait for the screen with the three Android images to appear, and then release the VOLUME DOWN button.
3. Press VOLUME DOWN to select CLEAR STORAGE, and then press POWER.
4. Press VOLUME UP to start the factory reset.

hard reset the device

reset then phone

After a couple of wrong patterns, it should come up with a screen asking your email and password to reset the pattern. That should do your job.

It says Emergency Calls means it locked to Network Lock,You need to Unlock it from Network Lock,You can get the Unlock code at
http://www.mobileunlocksolutions.com/htc-touch-hd/rs1wp9/ and Unlock it,Then You can get the password code from service provider as free of cost,.

Your IMEI numbers are needed to unlock your HTC G1 mobile phone. Reveal the codes by pressing *#06# on your phone keypad. Then after getting the information, please go to an HTC UNLOCK CODE website for you to be provided with the correct codes. You also may need to know the country and network the phone was purchased from. thanjs

format the phone... download the firmware frm the HTC site and follow the instructions

Ok, So I just had the same thing happen to me last night and I just fixed it. It'll take 2 people to do it. I went on to my gmail and changed my pattern, after a few minutes my phone had a triangle with an exclamation mark come up in the notifications bar. Don't bother turning off your phone...mine didn't reset for the pattern after 7 hours of being turned off. At this point, once you get that triangle, get someone to call your phone, it'll unlock it for a few minutes. Just long enough for you to change the password on your phone by clicking into that arrow. Then your phone will lock again after the call is done. Put the new password into your phone again on this screen. Then it'll ask you to draw another pattern. Draw something simplistic, then if you want to take it back off just go back into your settings and remove the lock....just remember your pattern this time! hope this helps!