Can I update it to 15.5.1 iOS now?
How can I update my iOS from 12.1 to 15.5.1
If your iPhone is too old, it would not be compatible with the newer software updates.
➢ iPhone compatibility with iOS 15.
Follow these steps, testing after each step:
Need more help?
- Call Apple Support at 1-800-APLCARE. 📞
- International Support. 🌐
- Contact Apple Support. 📝
- Chat using Messages. 💬