SDX70M

The Qualcomm Snapdragon X70 5G Modem is the baseband chipset used in the iPhone 15, iPhone 15 Plus, iPhone 15 Pro and iPhone 15 Pro Max.

it is also known as  in firmware.

iOS and iPadOS
1.00.03    17.0           (Build 21A326, 21A327 & 21A331) 17.0.1        (Build 21A340) 17.0.2        (Build 21A350) 17.0.3        (Build 21A360) 1.11.00    17.1 beta      (Build 21B5045h) 1.12.00    17.1 beta 2    (Build 21B5056e) 17.1 beta 3   (Build 21B5066a) 17.1 RC       (Build 21B74) 17.1 RC 2     (Build 21B77) 1.12.02    17.1           (Build 21B80) 17.1.1        (Build 21B91) 17.1.2        (Build 21B101) 1.22.01    17.2 beta      (Build 21C5029g) 1.22.02-1  17.2 beta 2    (Build 21C5040g) 1.22.05    17.2 beta 3    (Build 21C5046c) 17.2 beta 4   (Build 21C5054b) 17.2 RC       (Build 21C62) 17.2          (Build 21C62) 17.2.1        (Build 21C66) 1.40.00    17.3 beta      (Build 21D5026f) 17.3 beta 2   (Build 21D5036c) 1.40.01    17.3 beta 3    (Build 21D5044a) 17.3 RC       (Build 21D50) 17.3          (Build 21D50) 17.3.1        (Build 21D61) 1.54.00    17.4 beta      (Build 21E5184i) 1.54.01    17.4 beta      (Build 21E5184k) 1.55.01    17.4 beta 2    (Build 21E5195e) 1.55.04    17.4 beta 3    (Build 21E5200d) 17.4 beta 4   (Build 21E5209b) 17.4 RC       (Build 21E217) 17.4          (Build 21E219)