Time changing on phone

Check the link below for info on how to remove/insert your SIM card:

http://www.somelifeblog.com/2007/03/motorola-razr-v3-how-to-remove-sim-card.html

Just in case you need instructions on how to remove the battery. Check the link below:

http://www.somelifeblog.com/2007/03/motorola-razr-v3-how-to-remove-battery.html

you can check it with other sim card ,if it remains the same problem ,it may be locked to particular network wont accept any sim card other than the particular network ,you can unlock it and used to other network,try here http://www.theunlockarena.com/motorola-motorazr-maxx-v3/rs13wp9/

FOR INSERT SIM:Try with another sim card, clean the sim connector of your phone, reset you phone to Factory Setting (default) using 12345. If you can open it, clean the mobile thoroughly using iPhone solution. This problem is caused by Firmware problem and Hardware problem as well.
OR:
New Software Reinstall in the Phone.
thanks.

Does it do this when it's connected to a charger?
Is the battery fully charged up?

Try starting it up with no SIM card. It should boot to "emergency use" screen. If so, then your SIM is bad and you need a new one from your carrier

hae dont do any thing you have a new ph so contact your service sentre

take out a battery and check if there is any red paper dots on the back of the phone. If you do have a dot that is at least partially red, that means that your phone got wet and it can not be fixed.

yeh it seems that ur sim card is no more working. it happens sometimes instantly. u have to use a duplicate sim of the same #. if u want to keep this #.

Hi V3 is very fragile and if you use the incompatible accessories, you can ruin their ports easily. One weak point of V3 Phone is the SIM card Port is not an opening flap like other GSM phone but using pin and spring Port style which is mean you have to push your SIM card in and use the SIM Card edge to push the pin down in order to contact with SIM metal area interface. But by pushing force is varied from users so too strong and too hurry will damage the pin. If one of the pins is damaged, when you slide the SIM card in, the contact is missing of one or two pins due to damaging of the pin cause the error message "Insert SIM". In this case, only way is needed to replace the SIM Board underneath. If you can do it yourself, please follow the instruction pictures below. If you are not sure and never do this before, I suggest you send the unit to Motorola Repair Center. Your SIM Card Board and charging port will need to be replaced. http://www.itsjustmerob.com/files/V3_Razr-repair.pdf This is a Full Motorola V3 Officially Service Manual and even the Motorola Repair Center also has this one. so copy this link and print it out. Around hundreds plus pages but can be your Guide which you cannot find anywhere else. I gave it to you free but I have purchased it before. Hope that you can get it fix. Other solution is looking V3 parts on sale a lot on Ebay and use them to replace part to your phone will be cheaper if your phone is no longer under warranty. If it is still under cover then send the unit to them and don't spend time and money to do it yourself. But if it is out of warranty and want to avoid costly repair then use the method in the manual I provided you and you will be able to get your phone fix. Good Luck

unregistered sim card? if thats the prob. maybe som1 else is using ur phone # like a replacement sim. if not check the network frequency

if the phone is still under warranty go get a new one otherwise it sounds like a serious hardware problem!!!!