No, it’s not true. I have updated to the latest iOS available and i have no issues. If it runs really slow i would get a battery check
No, it’s not true. I have updated to the latest iOS available and i have no issues. If it runs really slow i would get a battery check
What stops you to change back to your original IMEI? Even if the new IMEI is/will be blacklisted or other issues, you can change it again