I BOUGHT THE PHONE IN SPAIN NOW IN SOUTH AFRICA IT SAYS THE CARD IS INVALID

South Africa - Country code = +27
ZIP codes are a system of postal codes used by the United States Postal Service (USPS) since 1963. The term ZIP, an acronym for Zone Improvement Plan, was chosen to suggest that the mail travels more efficiently, and therefore more quickly (zipping along), when senders use the code in the postal address.
To call South Africa from the U.S., just follow these dialing instructions: First dial 011, the U.S. exit code. Next dial 27, the country code for South Africa. Then dial the 2-digit area code (see sample calling code list below) followed by the 7-digit phone number.
South Africa Telephone Code 27. South Africa telephone code 27 is used to make international calls from South Africa. You may also see 27 referred to as the South Africa country phone code, or South Africa international calling code.
http://electronicshelponline.blogspot.com/

Firmware Country Codes AW Hungary
AZ France
BD Cyprus, Greece
BY Greece
CB Poland
CE Benelux
CP Denmark, Finland, Norway, Sweden
DB Vietnam
DC Thailand
DD India
DT Australia
DX Indonesia, Malaysia, Philippines, Singapore, Vietnam
DZ Malaysia, Singapore
JA South Africa
JC Algeria, Morocco, Nigeria, South Africa, Tunisia
JP Arabic
JR Arabic
JV Algeria, Egypt, Iran, Iraq, Kuwait, Morocco, Nigeria, Oman, Pakistan, Saudi Arabia,South Africa, Syria, Tunisia, Turkey
JW West Africa
JX Algeria, Egypt, Iran, Iraq, Kuwait, Morocco, Nigeria, Oman, Pakistan, Saudi Arabia,South Africa, Syria, Tunisia, Turkey
KA Turkey
ME France
MK Serbia
MS France, Germany, Italy, Netherlands, Portugal, Spain, Turkey, UK
MT Switserland
MY Italy
NH Latvia
PO France
PU Russia
UB Brazil
XA Austria, France, Germany, Italy, Netherlands, Switzerland, United Kingdom
XB Denmark, Norway, Sweden
XC Portugal, Spain
XD Croatia, Czech, Hungary, Slovakia
XE Bulgaria, Estonia, Kazakhstan, Latvia, Lithuania, Russia, Ukraine
XF Bulgaria, Croatia, Romania
XP UK, France, Italy, Spain, Netherlands, Poland, Portuguese, Turkey
XX Austria, Belgium, France, Germany, Hungary, Italy, Spain, United Kingdom
XW Austria, Belgium, France, Germany, Hungary, Italy, Spain, United Kingdom
ZC China, Hong Kong
ZH Hong Kong
ZS China, Hong Kong
ZT Taiwan

You can get your Nokia X2-02 unlocked using the unlock code from your network provider (MTN,South Africa) it may or may not be free....To get guidance on how to enter the unlock code you can visit Mobileunlockguide.com and follow their free unlock instructions and remove the network lock easily.

If the Samsung C3050 says invalid Sim means it locked to network ...you need to unlock it...You need to specify the network locked in spain...I have unlocked my SAMSUNG C3050 from Vodafone spain using the unlock code from the site Simpleunlocking.com/samsung-c3050/rs16wp9/ and got the free UNLOCKING instructions at here Mobileunlockguide.com and unlock it step by step.So you can unlock it and use woth any GSM Network Sim card.

Your mobile is locked with network provider.So whenever you insert a sim, your mobile displays the message like "Invalid SIM" .After unlocking you can use it any network in your mobile. This unlocking can be done through codes. I found a free unlocking service at Unlocking4free.com .If your mobile model is listed here, you can unlock your mobile easily.

gOOD DAy, Maybe you bought the phone with locked code for a particular network, seems that it came from hongkong. My advice you must reformat the unit using the computer. coz it cant reformat manually. Reformat so you can able to use it on any network or simcard you desire. Thanks

just dial *#1234# to check firmware version

Firmware Information
S3310=Model DD=Region I=Year F=Month
1=Revision
Region codes:

• BD Cyprus, Greece
• CP Finland
• DB Vietnam
• DC Thailand
• DD India
• DT Australia
• DX Indonesia, Malaysia, Philippines, Singapore, Vietnam
• DZ Malaysia, Singapore
• JA South Africa
• JC Algeria, Morocco, Nigeria, South Africa, Tunisia
• JP Arabic
• JR Arabic
• JV Algeria, Egypt, Iran, Iraq, Kuwait, Morocco, Nigeria, Oman, Pakistan, Saudi Arabia, South Africa, Syria, Tunisia, Turkey
• MT Switzerland
• XA Austria, France, Germany, Italy, Netherlands, Switzerland, United Kingdom
• XB Denmark, Norway, Sweden
• XC Portugal, Spain
• XD Croatia, Czech, Hungary, Slovakia
• XE Bulgaria, Estonia, Kazakhstan, Latvia, Lithuania, Russia, Ukraine
• XF Bulgaria, Croatia, Romania
• XX Austria, Belgium, France, Germany, Hungary, Italy, Spain, United Kingdom
• ZC China, Hong Kong
• ZT Taiwan
• Mobile carrier codes:
• AE SFR, France
• AI Tim, Italy
• AM Vodafone
• AN E-Plus, Germany
• AO O2
• AS KPN, Netherland
• AU Mobilkom, Austria
• BB Tmn, Portugal
• BF Optimus, Portugal
• BG Telefonica, Spain
• BM Swisscom, Switzerland
• BN Amena, Spain
• BO T-Mobile, Germany
• BU Vodafone
• BV Orange, Switzerland
• BW O2, United Kingdom
• CD Proximus, Belgium
• CG Telia Mobitel, Sweden
• CH SingTel, Singapore
• CK Tele2 Comviq, Sweden
• CT Tdc, Denmark
• CU One, Austria
• CV Telenor, Norway
• DT Optus, Australia
• DV Telstra, Australia
• EF Celcom, Malaysia
• JB Vodacom, South Africa
• MD Telia Sonera, Finland
• MJ Vodafone, Italy
• MM Tele Ring, Austria
• MV NetCom, Norway
• NA Nrj, France
• NB Tele2 Norway, Norway
• NE H3g Nordic, Sweden
• NP H3g, Italy
• SS Vodafone, Japan
• Release year codes:
• A 2001
• B 2002
• C 2003
• D 2004
• E 2005
• F 2006
• G 2007
• H 2008
• I 2009
• Release month codes:
• A January
• B February
• C March
• D April
• E May
• F June
• G July
• H August
• I September
• J October
• K November
• L December

Hi, Your phone needs to be unlocked and then you can use it with any sim card in any country. It can be ulocked remotely with a code that you enter in the phone. It is available for a fee. If interested please email me [email protected]