My razar what do you do when your t-mobile razar keeps on saying insert sim when you already did

Did you mean your phone shown no sim card inserted even your sim card present on your phone?
Yes,Means,There are three possibilites to get this type of issue.
1.There may be a problem in your Sim card so try another one.
2.Check your Sim whether it's properly inserted or not
3.Your mobile is locked to particular network provider.
If your problem persists,After trying first two ways means definitely Your mobile phone is restricted by some network so try to unlock your mobile phone.For unlocking you can approach your service provider or else try to buy an unlocking service from any one of the online unlocking service provider like
MobileUnlockSolutions.com

Hope your mobile is locked with a network so to get rid of this problem you have to unlock your mobile..try theunlockspot to get unlock code for your mobile and get it unlocked so that you can be able to use other provider's sim without any restriction..

switch off your mobile and keep away your sim, insert another working sim in the mobile and turn-on your mobile... if this sim is working, then turn off your mobile and re-insert your old sim. now it will work.
in case mobile is not working with new sim, you have to replace the "signal chip" of your mobile.
Best of Luck!
Pawan Verma

CHECK IS THAT CDMA OR GSM MOBILE!

1) if it is CDMA , you cant insert sim.
2) if it is GSM , YOU have to unlock that and then you can insert other SIM.

CHECK UR MOBILE MANUAL(CATALOG) TO KNOW THE PORT WHERE U CAN INSERT THE SIM.

Hi,is your mobile saying to insert sim card even after inserting a valid card into your mobile? it means that your mobile is locked..to unlock it you can contact your current provider to get unlock codes to unlock your mobile or can get it from online providers..once i got unlock code for my mobile from classicunlocking and unlocked my mobile..you can too try getting codes for your mobile and get it unlocked..but before that check whether unlock codes for you country and provider..

It's Because...Your Mobile Locked to Some Network...So that it coming error Insert Sim Card....Or Invalid Sim Or Insert Correct Sim....To recover from this problem...You need to Unlock the Mobile...You can Unlock it using the Unlock code here
http://www.wickedunlock.com/supported-phones/rs11wp7/ and Use the any GSM Network Sim...

try with a diferent card

i am using w580i sony ericsson mobile phone which freeze and restrat after some seconds and says insert sim when sim is already inserted

Sounds like phone is locked or firmware is bad

It's ispossible that your phone is sim locked into a specific network provider.