T-Mobile US

T-Mobile’s main bundle in the US is TMobile_US 72.1. It is one of the largest carrier bundles, and the only one with modem files for MVNOs.

Bundles

Bundle
`TMobile_US`	T-Mobile, Metro by T-Mobile ???
`TMobile_MVNO_US`, `TMobile_Wholesale_US`	MVNOs without their own bundle
`TMobile_Comcast_US`	Xfinity Mobile
`TMobile_Charter_US`	Spectrum Mobile
`TMobile_UltraMint_US`	Ultra Mobile / Mint ???
`TMobile_Boost_US`	Boost
`TMobile_Vodafone_US`	???

Xfinity and Spectrum have one bundle on Verizon and one on T-Mobile each.

SIM matching

TMobile_US lists 35 SupportedSIMs: 14 plain MCC+MNCs (310160, 310200 to 310270, 310310, 310490, 310660, 310800, 311660, 311882), GID1 54 on 310240 and 310260, and 20 ICCID blocks under 310260 (310260_ID-89012600 and on).

MVNO configurations

TMobile_US has three MVNOOverrides:

SIMs	Changes
`311660`	attach APN `iot.t-mobile.com`, software updates opt-in, no carrier services menu, no My Account
`311882`	the same
`310310`	Wi-Fi Calling without entitlement, ePDG `epdg.epc.mnc310.mcc310.pub.3gppnetwork.org`, entitlement server `https://eas3.msg.lab.t-mobile.com`

So SIMs on 311660 (MetroPCS’s old range) and 311882 attach with an IoT APN, and SIMs on 310310 are sent to an entitlement server with lab in its name. Who uses those ranges today is ???.

It is also the only bundle with per-MVNO modem files: overrides_mvno1_*.der.pri, one for each phone group, next to the normal ones. Which configuration uses them is ???.

Emergency calls

EmergencyCalling.EmergencyNumbers:

911     voice and text, preferred
922     text only, TestNumber
933     text only, TestNumber

933 is the US number for testing a 911 address. Only TMobile_US and TMobile_Comcast_US mark numbers as TestNumber.

IMSConfig.Signaling.CallEndReasons has three emergency-specific reasons no other bundle has: EmergencySetupTimeout (Call-setup time-out), EmergencyUserTriggered (User ends call) and EmergencyUserTriggeredTimeout (User ends call and SIP response time-out).

QuickSwitch

Only TMobile_US and TMobile_Germany have a QuickSwitch dictionary:

SMSForkingMechanism                     3
AllowiPhoneTransferOfSecondaryAccount   true    (TMobile_US only)
SecondaryAccountReturnsAllDevices       true
WatchHandling                           3

and CarrierEntitlements.SupportsQuickSwitchSetActiveIccid. This looks like moving a line between devices without a new SIM. ???

Other

IMSConfig.EnableThumperByDefault is true only here and in Sprint_CSIM_LTE_US. Thumper is ???.
CarrierAppDiscoverability.AllowCarrierSpaceApp is only in TMobile_US and Free_fr.
PushSettings.PreferredNetworksTopic is com.t-mobile.msg.eas.