# Mobile Country Code Mobile Country Code is a protocol, standard, or security technology recorded in [[Scanned_20260730-1706|Scanned_20260730-1706]]. In the reconstruction, MCC 310 identifies the United States, while MNC 260 identifies T-Mobile's network. ## Historical and Technical Context An [[Access Point Name|APN]] tells a mobile device which carrier packet-data gateway and service profile to use; wrong APN data can leave voice service intact while breaking mobile data or MMS ([T-Mobile APN explanation](https://www.t-mobile.com/dialed-in/wireless/what-is-an-apn)). [[Mobile Country Code|MCC]] 310 identifies the United States, while [[Mobile Network Code|MNC]] 260 identifies T-Mobile's network. “default,” “supl,” “mms,” and “ia” are Android APN service types for general packet data, assisted-location services, multimedia messaging, and initial attachment. The handwritten “wholesale” profile and `mmsmvno.com` endpoint fit an MVNO operating through T-Mobile infrastructure. ## Role in Scanned_20260730-1706 The page documents manual Android provisioning during a number transfer or device migration. It is a practical continuation of page 4: account activation alone did not finish the job, so the network route, MMS endpoint, protocol family, and carrier identifiers were preserved. ## Notebook Evidence - [[Scanned_20260730-1706|Scanned_20260730-1706]], PDF page 5: Mint/T-Mobile APN and MMS configuration. **Evidentiary status:** The page occurrence and transcription are notebook evidence. Technical identification follows the source reconstruction’s cited research. Co-occurrence does not by itself prove ownership, deployment, or a direct operational relationship. ## Relationships and Overlays On the cited page or pages, Mobile Country Code appears with [[Access Point Name|APN]], [[Mobile Network Code|MNC]]. These are page-level or reconstruction-level relationships, not automatic claims of dependency. ## Cross-Notebook Significance This note parallels the enterprise enrollment and Algorand key-custody material in [[Scanned_20260730-1802|Scanned_20260730-1802]]. Both notebooks separate reachability or network participation from the authority required to change protected state. ## Missed Signals and Open Leads “wapenc” may be an APN-field value or a fragment from the adjacent configuration screen. “75202” and “90210” look like ZIP codes, but their exact relationship to the account is not visible. ## Sources - [[Scanned_20260730-1706|Scanned_20260730-1706]], especially PDF page(s) 5. - `Scanned_20260730-1706.pdf`, cited as a plain archival filename; the PDF is not linked from `wiki-notes`. - External research citations used for identification remain preserved in the source reconstruction. - [T-Mobile APN explanation](https://www.t-mobile.com/dialed-in/wireless/what-is-an-apn) ## Scanned_20260730-1659 overlay **Source evidence:** [[Scanned_20260730-1659#PDF page 4 — Galaxy Tab S7 firmware, UDisks2, and cellular identifiers|page 4]]. `AP`, `BL`, `CSC`, and `HOME_CSC` are Samsung firmware-package components; `SM-T870` is the Galaxy Tab S7 Wi-Fi family. [[UDisks2|UDisks2]] exposes storage objects and filesystem operations through [[D-Bus|D-Bus]]. `4294967295` equals $2^{32}-1$, the maximum unsigned 32-bit integer. [[Mobile Country Code|MCC]] and [[Mobile Network Code|MNC]] identify a public land mobile network; `Cell ID` identifies a radio cell within carrier/location-area context. **Relationship overlay:** [[D-Bus|D-Bus]] · [[Mobile Network Code|Mobile Network Code]] · [[Samsung Galaxy Tab S7|Samsung Galaxy Tab S7]] · [[Samsung Odin Firmware Package|Samsung Odin Firmware Package]] · [[UDisks2|UDisks2]] · [[Unsigned 32-bit Integer|Unsigned 32-bit Integer]]. This evidence supplements rather than replaces earlier notebook interpretations. It connects the existing note to [[Identity Continuity|identity continuity]], [[Device Sovereignty|device sovereignty]], and [[Scanned_20260730-1659|Scanned_20260730-1659]].