Question about Nokia N73 Cellular Phone

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Sim invalid I bought a phone in the UK but now my namibian sim card wont work, it says the sim is invalid,what now?

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Your phone might be on contract with some UK network provider... u can unlock it... unlocking wil cost u more... u can go to the near authoridsed service center or grey market service center... they wil unlock it...

Posted on Aug 28, 2008

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It is a problem of network provider,your cellphone is not open to there sim card network provider..

Hope this may help;


Posted on Aug 28, 2008


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Posted on Jan 02, 2017

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What to do when you insert a sim on nokia n97 and it says invalid sim?

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If your not trying your sim in a different phone and your getting the invalid sim error then it means that your sim card is no longer active or valid and you need to contact your cell phone provider to find out why.

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This phone does not work in the UK anymore as stated on any legit ebay site for the Sci Phone.

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I purchased an N73 from ebay with serial number 356260016018574 it says "SIM CARD IS INVALID"..can you help me?

Actually the prolem doesnot lie with your phone.
ok iill try to give a best solution.
1) did you call you customer care about the Sim card activation,if you Sim card is not activated you might get "INVALID SIM CARD".
2)remove and place you Sim card properly into the phone as put the lock and check whether it fits perfectly.if your misplaced it wont work
3)IF your simcard is old,then its the problem with the sim card,try replace a new one.

i say its not the problem with you phone as long as your phone's menu,keypad,camera etc etc are working fine..

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2 Answers

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Did you try changing the sim card ??

If the sim aint the problem then you will nedd to flash your phone, most resellers can do this for you cheaply :)

Dec 27, 2007 | Computers & Internet

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