Motorola v8 when insert Airtel or Uninor Sim it shows Unregistered Sim. and when i insert Vodafone Sim it works. please solve my problem thanx R B CHARY

check the simcard reader pins if it's align or bend the brace on top of the simcard so it fits and hit the 6 pin along the simcard interface.try to clean it as well.

you must seek a technician...

i coud only use aircel & vodafone sim in it , cud any say abt dis ? how can i use other sim ?

it may be due to network lock, contact service provider if it locked , you can get unlock codes here http://www.mobile-unlocker.com/
you need to specify the phone model and network provider

It seems your razr is operator locked. You will need to take it to a phone shop and have it unblocked or visit this site
http://www.unlockxpress.com/unlockcodes_s/22.htm
unfortunately you will have to pay for these services.
good luck

If the phone is branded then it probably needs to be unlocked. Is there another service provider written on the case?

is it an unlocked phone? The "Unregistered SIM" message means that you're using a SIM card for which this phone is not intended. You will need to have the phone unlocked and it should work.

If it is a new fone then Phones are not shipped activated. You should look in the box for activation instructions. Read and follow them.
is that a prepaid sim then probably the sim has been deactivated...

If the phone is saying unregistered sim It basically means that the sim card has either not been activated at all or has not been activated to be used with that handset... Simply contact your carrier and they should be able to asess the situation over the phone

I’m happy to help further over the phone at https://www.6ya.com/expert/brandon_156682b88afabb53

your handset is barred from the network,
you can use cellc like you are, OR
you can take it in to a repair shop and have them fit you a new pcb

I have got motorazr2 V8. The display shows an unregistered SIM. I have contacted AIRTEL and they suggested to upgrade my software. They told that some motoroal phones have got this problem that even though you have a vaild IMEI it doesnt get recognised because of the software problem.
From where can I upgrade the software and how to do it.