The world of iMessage can be a murky one when trying to get it to work with whichever phone number you have. Changing SIM cards, iPhones or especially actual phone numbers can cause all kinds of misery as far as iMessage and its activation is concerned. Specifically, it just refuses to work and iMessage ends up not knowing what your phone number is or worse, thinks it does and iMessages just disappear into the ether.
Quite a number of people with jailbroken devices are facing such a problem at the moment on iOS 8.3 after jailbreaking with the newly released TaiG tool. The issue is not necessarily TaiG’s but rather iMessage’s, because we have seen such problems on non-jailbroken iPhones over the years as well. Apple just seems to struggle with the whole idea of iMessage phone number activation for whatever reason. Luckily though, getting the whole shebang to work again may be just a few steps away, thanks to a solution provided by Reddit user iPodZombie. You’ll need to be jailbroken though, so this is probably only useful to you if a recent TaiG update has gone awry.
Here are the steps you are going to want to follow:
Step 1: Enter Safe Mode. This can be done in a variety of ways. You can set an Activator action to do this, or simply use tweak like MultiBoot or Power Tap to enter Safe Mode.
Step 2: Once in Safe Mode, head into the Settings -> Messages and toggle iMessage off and then back on. You will notice the device authenticate and activate. You’re nearly done.
Step 3: Now, scroll down to the Send & Receive area and you should see your phone number selected. Add any email addresses you want to use with iMessage here.
Step 4: Exit Safe Mode.
Step 5: Test iMessage. It should now work just fine, including with your iPhone’s phone number.
And that’s it, you’re all done. It may not help if you are suffering from iMessage activation issues on a non-jailbroken device, but if iOS 8.3 is causing problems after using TaiG’s jailbreak then this little guide may just be what you need to get messaging again.