Question about Samsung SGH-C300 Cellular Phone

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It says invalid sim card

The phone is SGH-C300

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Your sim card might not be in the right way. take it out and try putting it in a different way

Posted on Jun 19, 2009

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1 Answer

Wrong simcard


Hai, In order to unlock your Samsung SGH-C300 mobile you can use unlock codes. If you want unlock code you can get it from Unlock-zone.com . They will help you to unlock your Samsung SGH-C300 mobile and send the code to your Email with instructions. After unlock you can use any gsm sim cards.

Apr 21, 2014 | Samsung SGH-C300 Cellular Phone

1 Answer

Invalid sim


Your phone is locked to its carrier. In order to use a different carrier, you should first unlock phone!!!You can use codes to unlock your Samsung SGH-E900! Unlocking using codes is easy and the safest method!! You can get the codes from your service provider or from reliable online sites like onlinegsmunlock.com .You can get the codes by specifying Your phone's manufacture, model,country and network!The steps to unlock is simple here and the codes are affordable!!!!

May 29, 2012 | Samsung SGH-E900 Cellular Phone

1 Answer

My SGH-M310 says that my sim card is invalid when I start up the phone. Do I have to get a sim card from a different company?


it may be due to network lock, contact service provider if it locked , you can get unlock codes here http://www.onlinegsmunlock.com/samsung/rs7wp8/
you need to specify the country and network provider,you can try other company sim

Mar 09, 2010 | Samsung SGH-M310 BLACK Cellular Phone

1 Answer

Need to unlock my phone so i can use other sim cards


is this code your phones code or your former company's sim lock code?
If it's your phone's lock code it should be the last 4 digits of your #... also could be 1234... 9999, or 0000...

Nov 24, 2009 | Samsung SGH-C300 Cellular Phone

1 Answer

I need to my SGH-C300 password.


first enter the code 3 times wrong. den enter ur puk number and it will work for sure. the puk number came wit ur sim card pack. if u cant find t contact ur service provider and dey give it to u immediately. tks

Jul 08, 2009 | Samsung SGH-C300 Cellular Phone

2 Answers

Need unlocking code for samsung c300


hi,
THIS CODE WILL UNLOCK ALL OF THE NEW MODEL SAMSUNG PHONES EXCEPT SMART PHONES. (X495-AND UP)

*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

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Apr 12, 2009 | Samsung SGH-C300 Cellular Phone

1 Answer

Unlock c300 for free


To unlock your mobile removes the sim and enter this code
*2767*7822573738#
This code reset eprom.

Feb 17, 2009 | Samsung SGH-C300 Cellular Phone

1 Answer

Puk disabled card blocked


if you have entered the puk code wrong around 10 times you have disabled the sim card, you can cut the sim card into peaces and throw it out from the window since you will have to contact your phone service provider for another sim card or if you have prepaid buy another set.


before throwing the sim card away I suggest you contact the service provider to see if they can help you. if the card isnt blocked yet.. or if you can still enter a puk code you might be able to fix it by calling the provider and getting the correct code if not, its useless card.

Jan 02, 2009 | Samsung SGH-C300 Cellular Phone

2 Answers

Invalid sim card


kindly change the frequency of the mobile.

Nov 15, 2008 | Samsung SGH-C300 Cellular Phone

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