Can accsess my phone but sayin sim inactive

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Hello and Welcome to FixYa!
Inactive SIM message may arise due to more than one issues. First things first check the hardware of your phone, to do this Put out the SIM card and check what happens. If it shows insert SIM card, its normal. If it shows the same inactive message then hardware malfunctioning.
Ok if the hardware is ok, then its simple. Inactive SIM means that your SIM card is not being able to register your Network carrier. The Phone with a red-line means SIM card registration failed. Although the signal radar works. This may be due to 2 issue; either there is a issue at the Service provider End, to check this call the service providers from other cell or land-line and check the status of your connection against this SIM Card No. If they say everything is ok. Then Its confirmed that your Phone is Network locked (Can only be used for one specific network) In this case coordinate with the seller.
I hope you will have a clearer picture now.

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Concerned, Nooh

i bought a new UNLOCKED phone (SE C902) and have tried both a Voda and O2 sim in it, bith produced an "inactive sim" error. I was advised to get a new sim incase mine was just out of date and doing this provided me with the same error...is there anyway to fix this with out sending it back??

the phone need to be unlock so take it to a mobile store that unlocks them and have it done.

or try unlockitnow.com

the network has deactuvated the sim card, ring voda up and ask them what they have done!

Please try these codes. This might work fine for any sim...

*7465625*638*00000000*00000000#
NEXT ENTER
#7465625*638*00000000#
AND THEN *#7465625# to check the locks....all locks are inactive...these are all the locks...
network lock - inactive
subset lock - inactive
sp lock - inactive
cp lock - inactive
sim lock - inactive
activa lock - inactive
phone lock - inactive
auto network - inactive
auto subset lock - inactive
auto sp lock - inactive
auto cp lock - inactive
auto sim lock - inactive

Hope this works.Thank you.

It is better to replace your phone with new one as you have bought recently. contact your retailer.

Sounds like a silly question but did you update the phone via the SE suite or via a flash updater? there may be problems if you left your sim in, if you flashed the phone. If you updated via the SE suite then take a look at the troubleshooting guide and moan to SE. As long as you haven't voided the warrenty on your phone there should be no problem with SE or your service provider repairing your phone for free. :)

Hope this helps. One last thing to try is to out another sim in the phone and see if it works. With any other provider except O2 you will need to use a sim the same as yours.

I know this is a silly question but are you putting the sim in correctly?

you gotta wait for your provider to activate it if nothing it 2 days call them with your dilemma