How do i get my second hand iphone that iam wanting to use my old o2 sim with

You have to contact the network provider from whom the iPhone was initially. If the network provider doesn't provide an unlocking solution, You can try to get it unlocked from any private source. For example, you can visit MobileUnlockSolutions.com and get the remote unlocking service at low cost with an easy unlocking guide. Good luck.

Hi,

Have you tried putting your old sim into another phone then transferring the contacts to the old phone, then putting your new sim in the old phone and copying the contacts onto the sim, then put your new sim (with copied contacts on) into your iphone and import contacts.

sorry if this seems a little confusing!

Hope it helps!!

(Please Leave feedback)

If your Iphone is officially unlocked then it should work with any (other) network compatible SIM card - just insert a friend SIM on another network (or just get a 'free' Vodafone pre-paid starter SIM for testing) and turn-on the unit - if it is locked in any way, it will tell you!
When you do a factory reset, your unit will normally reverted to original 'o2' BRANDING and defaults: this can only be removed by reflashing/reprogramming your iPhone with 'generic' Apple Iphone firmware. 'Branding' in general in an unlock hanset will not stop you from using most of the resources of your new network but 'unbranding' (andor 'unlocking') can always be performed by a qualified technician.
Hope it helps: let me know how you go! Have fun.

Is this a UK model? If so, it will be locked to O2 and it will only support O2 sim cards.

Have you tried transferring contact via "bluetooth"?

If both device support "blue-tooth" capability, you may be able to pair both devices and transfer contacts from the source to the target, without imputing anything.

Hope this helps! Thanks.

Is your sim card csm or cdma? I'm not sure if the iphone can handle both, but I know it works with GSM.

If you have a gsm sim card, then you just need to unlock it. Of course, Apple won't let certain carriers use their phones legally. So you have to unlock it. I don't remember the exact process, but there's a good program to help you through it step by step.

Go to this site and read up before trying to do anything technical with your phone (link)wikee.iphwn.org

There's a lot of informtion there, so make sure to read up to find what's best for you. You'll need to know the firmware your phone is using 1.1.4 to 2.2 you need to know. The site I posted should have all the info for you.

Again, if your sim card is gsm, it should be no problem to use your sim.

Alright, good luck.

Caid.

Is the SIM an iPhone SIM? O2 have an iPhone specific SIM which is not the same as a 'normal' O2 SIM.

It sounds like the handset is iCloud locked (find my iPhone hasn't been turned off). This happens too many second hand phones, the previous owner isn't aware of this or u have bought a stolen phone?
If you know the previous owner they would know the apple ID and ID password to activate it, after that you would have to do a reset the phone.
Good luck

in order for it to work rite its going to need a fulll charge. i will plug mine in to the wall or outo and keep pluging and unpluging it not from the phone but the wall or cigaret lighter untill it charges it. try removeing the battery

I’m happy to assist further over the phone at https://www.6ya.com/expert/james_1cb31da1bc8c6102

hi i bought an IPHONE IN UK ( LONDON ) its a latest version 04.02.13_G for V 1.1.2 in that O2 sim is there now am in india i want to use in india how to unlock or any other solution plz hel me out in this its urgent