---
title: "AT&T / Unefon: MCC 334 MNC 050"
mcc: "334"
mnc: "050"
plmn: "334050"
tadig: "MEXIU"
brand: "AT&T / Unefon"
operator: "AT&T Mexico"
country: "Mexico"
country_iso: "MX"
region: "North America & Caribbean"
technologies: ["2G", "3G", "4G"]
updated: "2025-04-09"
canonical: "https://mcc-mnc.org/networks/334_050"
---

# AT&T / Unefon: MCC 334, MNC 050 (Mexico)

**AT&T / Unefon** (operator: AT&T Mexico) is a mobile network in [Mexico](https://mcc-mnc.org/countries/mexico.md) (North America & Caribbean), identified by MCC **334** and MNC **050**: PLMN ID 334050, also written 334-050 or 334 050, with the TADIG roaming code **MEXIU**. It runs 2G, 3G and 4G.

## Identifiers

| Field | Value |
|---|---|
| MCC (Mobile Country Code) | 334 |
| MNC (Mobile Network Code) | 050 |
| PLMN ID (MCC+MNC) | 334050 |
| TADIG code | MEXIU |
| Brand | AT&T / Unefon |
| Operator | AT&T Mexico |
| Country | Mexico (MX) |
| Region | North America & Caribbean |
| Dialling code | — |
| Technologies | 2G, 3G, 4G |
| Last updated | 2025-04-09 |

## Technologies & bands

| Generation | Bands | Measured cells |
|---|---|---|
| 2G | [GSM 850](https://mcc-mnc.org/coverage/gsm_850.md), [GSM 1900](https://mcc-mnc.org/coverage/gsm_1900.md) | 12 |
| 3G | [UMTS 850](https://mcc-mnc.org/coverage/umts_850.md), [UMTS 1900](https://mcc-mnc.org/coverage/umts_1900.md), [UMTS 1700](https://mcc-mnc.org/coverage/umts_1700.md) | 7,576 |
| 4G | [LTE 1700](https://mcc-mnc.org/coverage/lte_1700.md), [LTE 850](https://mcc-mnc.org/coverage/lte_850.md) | 5,459 |

## Voice & calling services

| Service | Status | Source |
|---|---|---|
| VoLTE | Unknown | — |
| VoWiFi | Unknown | — |
| ViLTE | Unknown | — |
| VoNR | Unknown | — |

A service not marked Supported or Not supported is unknown: no data either way, not a sign that the network lacks it.

## About AT&T / Unefon

AT&T Mexico, operating under both the AT&T and Unefon brands, is a major player in the Mexican mobile telecommunications market. With Mobile Country Code (MCC) 334, identifying Mexico, and Mobile Network Code (MNC) 50, AT&T/Unefon provides extensive mobile services across the nation. AT&T's presence significantly impacts North America & the Caribbean's connectivity landscape, especially considering its strategic importance within Mexico, a key market in the region. Operating in a competitive environment alongside other prominent networks like Telcel, AT&T strives to offer comprehensive coverage and innovative services to its subscribers.

AT&T entered the Mexican market with the acquisition of Iusacell and Nextel Mexico in 2015, solidifying its commitment to providing advanced mobile technology and competitive pricing. Unefon, known for its prepaid options and attractive data packages, caters to a different segment of the market. Both brands leverage AT&T's infrastructure to deliver 4G LTE and, increasingly, 5G connectivity. The network constantly invests in expanding its reach, bringing improved mobile services to urban and rural communities alike, aiming to bridge the digital divide and support Mexico’s growing demand for reliable mobile communication.

## APN settings

| Name | APN | Types | Protocol | Username | Password | MMSC | MMS proxy | MMS port | Source |
|---|---|---|---|---|---|---|---|---|---|
| Iusacell Internet | `web.iusacellgsm.mx` | default, supl | — | `iusacellgsm` | `iusacellgsm` | — | — | — | LineageOS |
| Iusacell MMS | `mms.iusacellgsm.mx` | mms | — | `mmsiusacellgsm` | `mmsiusacellgsm` | `http://mms.iusacell3g.com/` | — | — | LineageOS |

Settings come from Android's AOSP and LineageOS APN lists and user corrections.

## APN settings: Other brands (brand not identified)

| Name | APN | Types | Protocol | MMSC | MMS proxy | MMS port | Source |
|---|---|---|---|---|---|---|---|
| Internet | `web.iusacellgsm.mx` | default, ia | IPV4V6 | — | — | — | AOSP |
| MMS | `mms.attmex.mx` | mms | IPV4V6 | `http://mms.att.com.mx` | 129.192.129.104 | 8080 | AOSP |
| Location | `supl.attmex.mx` | supl | IPV4V6 | — | — | — | AOSP |
| Modem | `modem.attmex.mx` | dun | IPV4V6 | — | — | — | AOSP |

## Android carrier config highlights

| Setting | Value | Key |
|---|---|---|
| Allow emergency numbers in call log | Yes | `allow_emergency_numbers_in_call_log_bool` |
| Mmi two digit number pattern | #9 | `mmi_two_digit_number_pattern_string_array` |
| Skip cf fail to disable dialog | Yes | `skip_cf_fail_to_disable_dialog_bool` |

## Cell towers

OpenCelliD has measured **13,047** cells on this network across 885 location/tracking areas, first seen 2015-12-14 and last seen 2026-09-17 (data as of 2026-09-27).

| Radio | Generation | Cells |
|---|---|---|
| GSM | 2G | 12 |
| UMTS | 3G | 7,576 |
| LTE | 4G | 5,459 |

Locate a single cell by MCC, MNC, LAC/TAC and cell ID with the https://mcc-mnc.org/cell-id-lookup tool, `GET /api/v1/cells` or the MCP `lookup_cell` tool. Cell data from OpenCelliD (https://opencellid.org), licensed CC BY-SA 4.0.

## Other networks in Mexico

| MCC | MNC | Network | TADIG |
|---|---|---|---|
| 334 | 001 | [Comunicaciones Digitales Del Norte, S.A. de C.V.](https://mcc-mnc.org/networks/334_001.md) | — |
| 334 | 010 | [AT&T](https://mcc-mnc.org/networks/334_010.md) | — |
| 334 | 020 | [Telcel](https://mcc-mnc.org/networks/334_020.md) | MEXTL |
| 334 | 030 | [Movistar](https://mcc-mnc.org/networks/334_030.md) | MEXMS |
| 334 | 040 | [Unefon](https://mcc-mnc.org/networks/334_040.md) | — |
| 334 | 060 | [Servicios de Acceso Inalambrico, S.A. de C.V.](https://mcc-mnc.org/networks/334_060.md) | — |
| 334 | 066 | [Telefonos de México, S.A.B. de C.V.](https://mcc-mnc.org/networks/334_066.md) | — |
| 334 | 070 | [Unefon](https://mcc-mnc.org/networks/334_070.md) | — |
| 334 | 080 | [Unefon](https://mcc-mnc.org/networks/334_080.md) | — |
| 334 | 090 | [AT&T](https://mcc-mnc.org/networks/334_090.md) | MEXN3 |
| 334 | 100 | [Telecomunicaciones de México](https://mcc-mnc.org/networks/334_100.md) | — |
| 334 | 110 | [Maxcom Telecomunicaciones, S.A.B. de C.V.](https://mcc-mnc.org/networks/334_110.md) | — |
| 334 | 120 | [Quickly Phone, S.A. de C.V.](https://mcc-mnc.org/networks/334_120.md) | — |
| 334 | 130 | [Axtel, S.A.B. de C.V.](https://mcc-mnc.org/networks/334_130.md) | — |
| 334 | 140 | [Nextel](https://mcc-mnc.org/networks/334_140.md) | MEXAL |
| 334 | 150 | [Ultranet](https://mcc-mnc.org/networks/334_150.md) | — |

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HTML version: https://mcc-mnc.org/networks/334_050 · Index for AI agents: https://mcc-mnc.org/llms.txt · Data is community-maintained; corrections welcome on the HTML page.