SDX60M

The Qualcomm Snapdragon X60 5G Modem is the baseband chipset used in the iPad Air (5th generation), iPad mini (6th generation), iPhone 13 mini, iPhone 13, iPhone 13 Pro and iPhone 13 Pro Max.

it is also known as  in firmware.

iOS and iPadOS
1.00.03    15.0           (Build 19A341, 19A342, 19A345 & 19A346) 15.0.1        (Build 19A348) 15.0.2        (Build 19A404) 1.13.00    15.1 beta      (Build 19B5042h) 1.14.01    15.1 beta 2    (Build 19B5052f) 1.15.01    15.1 beta 3    (Build 19B5060d) 1.15.02    15.1 beta 4    (Build 19B5068a) 15.1 RC       (Build 19B74) 15.1 RC 2     (Build 19B75) 15.1          (Build 19B74 & 19B75) 1.15.05    15.1.1         (Build 19B81) 1.29.01    15.2 beta      (Build 19C5026i) 1.30.00    15.2 beta 2    (Build 19C5036e) 1.32.02    15.2 beta 3    (Build 19C5044b) 1.32.05    15.2 beta 4    (Build 19C5050b) 1.32.07    15.2 RC        (Build 19C56) 15.2          (Build 19C56) 1.32.09    15.2 RC 2      (Build 19C57) 15.2          (Build 19C57) 15.2.1        (Build 19C63) 1.31.01    15.3 beta      (Build 19D5026g) 1.41.06    15.3 beta 2    (Build 19D5040e) 15.3 RC       (Build 19D49) 15.3          (Build 19D50) 15.3.1        (Build 19D52) 1.55.00    15.4 beta      (Build 19E5209h) 1.57.00    15.4 beta 2    (Build 19E5219e) 1.59.00    15.4 beta 3    (Build 19E5225g) 1.59.03    15.4 beta 4    (Build 19E5235a) 15.4 beta 5   (Build 19E5241a) 15.4 RC       (Build 19E241) 15.4          (Build 19E241) 15.4.1        (Build 19E258) 1.60.00    15.5 beta      (Build 19F5047e) 15.5 beta 2   (Build 19F5057e) 1.61.00    15.5 beta 3    (Build 19F5062g) 15.5 beta 4   (Build 19F5070b) 15.5 RC       (Build 19F77) 15.5          (Build 19F77) 1.60.00    15.6 beta      (Build 19G5027e) 15.6 beta 2   (Build 19G5037d) 1.70.00    15.6 beta 3    (Build 19G5046d) 1.70.01    15.6 beta 4    (Build 19G5056c) 15.6 beta 5   (Build 19G5063a) 15.6 RC       (Build 19G69) 15.6 RC 2     (Build 19G71) 15.6          (Build 19G71) 2.04.00    16.0 beta      (Build 20A5283p) 2.06.01    16.0 beta 2    (Build 20A5303i) 2.07.00    16.0 beta 3    (Build 20A5312g & 20A5312j) 2.08.01    16.0 beta 4    (Build 20A5328h)