Sim lock i can't use the phone function to make some call during apple iphone in my country , indonesia. Please tell me how o unlock my apple iphone? regard, stephen tjhin

Make Sure your iPhone asking for sim unlock code after insert a non accepted sim card( For Ex. if you are using AT&T sim insert the T-Mobile sim in this)
If yes then follow the steps below:
go to the www.unlockninja.com and select as per your requiremnet
Brand Name:-
Model No or Name:-
Country from The Phone Purchased:-
Network on which The Phone Is Locked:-
Mail ID:-
place order to unlocking confirmation at https://www.unlockninja.com/unlock-apple+phone and wait for the giving time that is 30 min to 2 days
You will confirmed via mail as the phone has been unlocked. Then you only need to follow the steps below:
How to fix sim lock in apple iPhone

How to Unlock the Apple iPhone 6 after getting the confirmation as Unlocked
-Install the last version of iTunes on your computer.
-Make sure your iPhone is updated with the lastest version of iOS.
-Switch ON your iPhone 6 with a SIM Card from a non-compatible network.
-Connect your iPhone 6 to your computer using the Original USB Cable.
-Launch iTunes andwait until iTunes detect your iPhone 6.
-Now disconnect your iPhone 6sand reconnect it after 10 seconds.
-Your iPhone 6 is now Unlocked!
Note:-In the unlikely event that your iPhone 6s is not unlocked, please restore your device following the official guideline from Apple - https://support.apple.com/en-us/HT201252

There is more than an issue to cause this. 1st that some iphones are locked on a specific operators, with a contract for one or couple of years. after end of contract you can unlock the iphone at the operator and can use any sim card. 2nd the sim card it self may be damaged & cannot be read by iphone, please try it in another phone and see if it is working.
To know if your iphone is officially locked/unlocked by the model number, you can google it.

Hello,

You need to jailbreak your phone to unlock it.
Also note: YOU WILL LOOSE ALL WARRANTY

Hi if your iphone 4s is not accepting your sim card whether it is displaying messages like sim invalid ,sim lock and so on once you insert your sim in it then it mean your iphone 4s is locked to some other network provider due to this it wont accept your sim until you unlock it .You can easily unlock your iphone 4s using sites like WickedUnlock.com here they are rendering remote unlocking service to unlock all model iphone from network lock ...You first check that whether the service is available for your country and network provider .If yes then pay for it and unlock your iphone 4s then freely use it with any GSM sim .

Depends on exactly where "abroad" is. The cell phone system is different from here, and only phones designed for that system will work there.

Your iPhone says "Invalid sim" means that your phone is locked to particular Network.To solve this problem you need to get your iPhone unlocked.You can get your iPhone unlocked safe and securely using Remote unlocking method from SuperUnlockCodes.com here you need to specify your country,Network name to whcih is locked,IMEI number of your iphone.

You phone has a country lock. Try to contact some Mobile repair shop or Visit apple store in your city. They surely will solve your problem.
Done.

No Sim Card Installed Insert a valid Sim with no pin lock

It asks for Country code means it locked to network ,but country code unlocking is suitable for Other Brand Phones,But for Unlocking I-Phones You can use the Remote Unlocking service,that is best and suitable for I-Phone Network Unlocking.You can get the remote Unlocking service from here Theunlockspot.com and unlock it,you can follow the instructions below and unlock it step by step.........


Apple iPhone Unlocking Instructions

1. Wait for us to send you an email saying your phone has been activated or remotely unlocked.
2. Install the latest version of iTunes.
3. Make sure your Apple iPhone phone software is updated to the latest version using the iTunes software.
4. Connect your Apple iPhone to iTunes with a NOT ACCEPTED SIM card.
5. Wait until iTunes detects your Apple iPhone.
6. Disconnect your Apple iPhone and reconnect it after 10 seconds.
7. Your Apple iPhone is now unlocked.