Can i use rim sim card & gsm sim card in only one phone...

That phone doesnt use sim cards. In the U.S., there are two different cellular technologies: CDMA and GSM (most of the rest of the world uses GSM). Up until 4G-LTE came along, CDMA phones didnt use sim cards. The cdm7176 is an older CDMA phone and thus doesn't have a sim slot.

Your BLACKBERRY 9630 TOUR Locked to network ,So you need to unlock it from current network lock to use other GSM Network Sim card....Visit the site
Theunlockarena.com/blackberry/rs13wp8/ get the unlock code and unlock it easily.Then use any GSM Network sim card...You can't Unlock CDMA Network locked Blackberry Phone.Only GSM Network locked Phones can be unlocked easily.

Hey, I am sorry but the HTC DROID ERIS is a CDMA phone and not a GSM phone which means that it will not work on any GSM network worldwide. GSM networks use SIM cards whereas CDMA networks do not use sim cards. This phone is a CDMA phone means it works without a sim card and will not have a slot for you sim card. a list of specifications for theHTC DROID ERIS is available here
Thank you for using FixYa! Let us know if this answer was helpful to you.

Sanyo SCP-2700 is a CDMA phone. Meaning, SIM cards are not supported in this type of phone. Only GSM phones use SIM cards. Here is the link to better understand the difference between GSM and CDMA phones: http://www.wisegeek.com/what-is-the-difference-between-gsm-and-cdma.htm
Hope this helps!
-jayps

There are basically 2 branches when it comes to mobile phones. Some phones have SIM cards to connect or another technology that does NOT use sim cards These non-sim phones use CDMA instead of SIMs, so you cannot just swap SIMs like on GSM.

This is GSM and is what T-Mobile and AT&T use for voice.
Sprint and Verizon use CDMA but isn't normally unlocked.

So think GSM / SIM cards...

if its rim gsm its easy....open the back panel from mobile.remove the battery and insert your rim gsm in thw sim card slot..

As far as I understand, Verizon works only on CDMA technology, and you are stating that you are using GSM, you won't be able to use a CDMA phone with a SIM card (GSM) not the same technology.

i think your phones is programmed for suppoting one kind of sim card chech if your handset is cdma or gsm if its is cdma it will not suport gsm sim cards but it will support all kinds of cdma sim cards and if it is gsm it will support only gsm sim card not cdma if its is progrmmable phone take to service center and check whether the phone have the capability to support both gsm and cdma

No you cannot.
the phone you are looking at is a cdma phone and t_mobile is a GSM network.
they will not work together.

I am sure if that is possible on a cdma phone...you may have to buy a GSM mobile.