PMB9955

The Intel PMB9955 is the baseband chip used in the Apple Watch Series 4, Apple Watch Series 5, iPad Pro (11-inch), iPad Pro (12.9-inch) (3rd generation), iPad Air (3rd generation), iPad mini (5th generation), iPad (7th generation), iPhone XR, iPhone XS and iPhone XS Max. It is responsible for transmitting simultaneous voice and data transfer on LTE (provided the carrier has the infrastructure to allow simultaneous voice and data transfer.)

Apple Watch Series 4 and Apple Watch Series 5
1.00.03    5.0          (Build 16R364) 5.0.1       (Build 16R381) 1.01.02    5.1 beta     (Build 16R5559d) 1.01.03    5.1 beta 2   (Build 16R5568d) 1.01.04    5.1 beta 3   (Build 16R5577c) 5.1 beta 4  (Build 16R5584a) 5.1 beta 5  (Build 16R5589c) 5.1         (Build 16R591) 5.1.1       (Build 16R600) 1.02.02    5.1.2 beta   (Build 16S5042a) 5.1.2 beta 2 (Build 16S5046a) 5.1.2       (Build 16S46) 1.03.00    5.1.3 beta   (Build 16S5523a) 1.03.01    5.1.3 beta 2 (Build 16S5531a) 5.1.3 beta 3 (Build 16S5535a) 5.1.3       (Build 16S535) 1.04.01    5.2 beta     (Build 16T5181f) 5.2 beta 2  (Build 16T5191d) 1.04.02    5.2 beta 3   (Build 16T5201c) 1.04.05    5.2 beta 4   (Build 16T5212e) 5.2 beta 5  (Build 16T5222a) 5.2 beta 6  (Build 16T5225a) 5.2         (Build 16T225) 1.04.03    5.2.1 beta   (Build 16U5079d) 5.2.1 beta 2 (Build 16U5091b) 1.04.05    5.2.1 beta 3 (Build 16U5101c) 5.2.1 beta 4 (Build 16U5110a) 5.2.1 beta 5 (Build 16U5113a) 5.2.1       (Build 16U113) 5.3 beta    (Build 16U5526f) 5.3 beta 2  (Build 16U5537b) 5.3 beta 3  (Build 16U5545c) 5.3 beta 4  (Build 16U5558b) 5.3 beta 5  (Build 16U5566a) 5.3 beta 6  (Build 16U5569a) 5.3         (Build 16U569) 5.3.1       (Build 16U600) 5.3.2       (Build 16U611) 5.3.3       (Build 16U620) 5.3.4       (Build 16U627) 5.3.5       (Build 16U652) 5.3.6       (Build 16U662) 1.51.02    6.0 beta     (Build 17R5491t) 6.0 beta 2  (Build 17R5507l) 1.53.23    6.0 beta 3   (Build 17R5521e) 1.54.21    6.0 beta 4   (Build 17R5532f) 1.55.03    6.0 beta 5   (Build 17R5546f) 2.00.01    6.0 beta 6   (Build 17R5556d) 6.0 beta 7  (Build 17R5566a) 6.0 beta 8  (Build 17R5571a) 6.0 beta 9  (Build 17R5575a) 6.0 GM      (Build 17R575) 6.0         (Build 17R575) 2.00.03    6.0.1        (Build 17R604 & 17R605) 2.01.03    6.1 beta     (Build 17S5054e) 6.1 beta 2  (Build 17S5059e) 2.01.04    6.1 beta 3   (Build 17S5068e) 6.1 beta 4  (Build 17S5076a) 6.1 beta 5  (Build 17S5083a) 6.1         (Build 17S84) 2.01.03    6.1.1 beta   (Build 17S5433b) 2.01.04    6.1.1 beta 2 (Build 17S5439a) 6.1.1 beta 3 (Build 17S5446a) 6.1.1 beta 4 (Build 17S5449b) 6.1.1       (Build 17S449) 2.01.03    6.1.2 beta   (Build 17S5775c) 2.02.00    6.1.2 beta 2 (Build 17S5792a) 6.1.2 beta 3 (Build 17S5796a) 6.1.2       (Build 17S796) 6.1.3       (Build 17S811) 2.03.02    6.2 beta     (Build 17T5224g) 2.03.04    6.2 beta 2   (Build 17T5234f) 2.03.05    6.2 beta 3   (Build 17T5244c) 6.2 beta 4  (Build 17T5251a) 6.2 beta 5  (Build 17T5254a) 6.2 beta 6  (Build 17T529) 6.2         (Build 17T529) 2.03.04    6.2.5 beta   (Build 17T5580e)

iPad Pro (11-inch), iPad Pro (12.9-inch) (3rd generation), iPad Air (3rd generation), iPad mini (5th generation), iPhone XR, iPhone XS and iPhone XS Max
1.00.07    12.0          (Build 16A366) 1.00.08    12.0.1        (Build 16A405) 1.01.12    12.1 beta     (Build 16B5059d) 1.01.20-1  12.1 beta 2   (Build 16B5068i) 1.01.27    12.1 beta 3   (Build 16B5077c) 1.01.29    12.1 beta 4   (Build 16B5084a) 1.01.30    12.1 beta 5   (Build 16B5089b) 12.1         (Build 16B92, 16B93 & 16B94) 1.02.09    12.1.1 beta   (Build 16C5036c) 1.02.16    12.1.1 beta 2 (Build 16C5043b) 1.02.18    12.1.1 beta 3 (Build 16C5050a) 12.1.1       (Build 16C50) 1.03.02    12.1.2 beta   (Build 16D5024a) 1.02.18    12.1.2        (Build 16C101 & 16C104) 1.03.05    12.1.3 beta 2 (Build 16D5032a) 1.03.07    12.1.3 beta 3 (Build 16D5037a) 1.03.08    12.1.3 beta 4 (Build 16D5039a) 12.1.3       (Build 16D40) 12.1.4       (Build 16D57) 1.04.10    12.2 beta     (Build 16E5181f) 1.04.13    12.2 beta     (Build 16E5191d) 1.04.21-2  12.2 beta 3   (Build 16E5201e) 1.04.28    12.2 beta 4   (Build 16E5212f) 1.04.30    12.2 beta 5   (Build 16E5223a) 12.2 beta 6  (Build 16E5227a) 12.2         (Build 16E227) 1.05.00    12.3 beta     (Build 16F5117h) 1.05.01    12.3 beta 2   (Build 16F5129d) 1.05.02    12.3 beta 3   (Build 16F5139e) 1.05.03    12.3 beta 4   (Build 16F5148a) 12.3 beta 5  (Build 16F5155a) 12.3 beta 6  (Build 16F5156a) 12.3         (Build 16F156) 1.05.04    12.3.1        (Build 16F203) 1.06.01    12.4 beta     (Build 16G5027g) 12.4 beta 2  (Build 16G5027i) 1.06.02    12.4 beta 3   (Build 16G5038d) 12.4 beta 4  (Build 16G5046d) 12.4 beta 5  (Build 16G5056d) 12.4 beta 6  (Build 16G5069a) 12.4 beta 7  (Build 16G5077a) 12.4         (Build 16G77) 12.4.1       (Build 16G102) 1.50.23    13.0 beta     (Build 17A5492t) 1.51.07    13.0 beta 2   (Build 17A5508m) 1.52.04    13.0 beta 3   (Build 17A5522f & 17A5522g) 1.53.02    13.0 beta 4   (Build 17A5534f) 1.54.04    13.0 beta 5   (Build 17A5547d) 2.00.01    13.0 beta 6   (Build 17A5556d) 2.00.01-2  13.0 beta 7   (Build 17A5565b) 13.0 beta 8  (Build 17A5572a) 2.00.01    13.0 GM       (Build 17A577) 13.0         (Build 17A577) 2.01.07    13.1 beta     (Build 17A5821e) 2.01.08    13.1 beta 2   (Build 17A5831c) 13.1 beta 3  (Build 17A5837a) 13.1 beta 4  (Build 17A5844a) 13.1         (Build 17A844) 13.1.1       (Build 17A854) 13.1.2       (Build 17A860 & 17A861) 13.1.3       (Build 17A878) 2.02.08    13.2 beta     (Build 17B5059g) 2.02.10-1  13.2 beta 2   (Build 17B5068e) 2.02.12    13.2 beta 3   (Build 17B5077a) 13.2 beta 4  (Build 17B5084a) 13.2         (Build 17B84) 13.2.2       (Build 17B102) 13.2.3       (Build 17B111) 2.03.04    13.3 beta     (Build 17C5032d) 2.03.07    13.3 beta 2   (Build 17C5038a) 13.3 beta 3  (Build 17C5046a) 13.3 beta 4  (Build 17C5053a) 13.3         (Build 17C54) 2.04.00    13.3.1 beta   (Build 17D5026c) 2.04.03    13.3.1 beta 2 (Build 17D5044a) 13.3.1 beta 3 (Build 17D5050a) 13.3.1       (Build 17D50) 2.05.09    13.4 beta     (Build 17E5223h) 2.05.10    13.4 beta 2   (Build 17E5233g) 2.05.13    13.4 beta 3   (Build 17E5241d) 13.4 beta 4  (Build 17E5249a) 13.4 beta 5  (Build 17E5255a) 13.4 beta 6  (Build 17E255) 13.4         (Build 17E255) 13.4.1       (Build 17E262) 2.06.00    13.4.5 beta   (Build 17F5034c) 13.4.5 beta 2 (Build 17F5044d)