A2101

iPhone XS Max (iPhone11,6) - Front view

iPhone XS Max

iPhone11,6

A1921
A2101
A2102
A2104
View Firmware Signing Status Downgrade Status
Quick Info
Earliest Firmware
iOS 12.0
September 17, 2018
Latest Firmware
iOS 18.7.10
August 17, 2026
Total Firmware
119 releases
Support Span
7 years 10 months
About model A2101

The model number A2101 belongs to the iPhone XS Max (device identifier iPhone11,6). Apple assigns multiple model numbers to each device for regional and connectivity variants, so one device usually carries several of them.

How do I find the model number on my device?

Open Settings > General > About and read the Model Number field. The number is also printed in the fine print on the back of the device and, on some models, on the SIM tray. Our model identification guide walks through every method.

What is the difference between A1921, A2102, A2104 and A2101?

Nothing software-related. These model numbers all refer to the same iPhone XS Max; Apple uses them for regional and connectivity variants, and firmware support is identical across all of them.

A1921
A2102
A2104