MT6186MV IC

Product Details
Product Details:

- Part Number: MT6186MV (Related Family Variant: MT6186W)

- Manufacturer: MediaTek Inc. (MTK)

- Function: Multi-Band Multi-Mode 4G LTE / 5G Sub-6 RF Transceiver / Baseband Intermediate Frequency (IF) IC

- Companion Processor / Modem Platforms:

* MediaTek Helio G90T (MT6785)

* MediaTek Dimensity 700 / Dimensity 720 (MT6833 / MT6853)

* MediaTek Helio G80 / G85 / G88 (MT6769 Series)

* Typically paired with Master PMIC MT6358W / MT6359 and Sub-PMIC MT6360RP

- Internal RF Subsystems & Capabilities:

* Direct-conversion RF down-conversion (RX) and up-conversion (TX)

* Integrated multi-channel Low Noise Amplifiers (LNAs), active mixers, and baseband analog filters

* Cellular Carrier Aggregation (CA) and multi-antenna diversity support

* High-speed differential digital I/Q interface directly communicating with the baseband modem

* 26 MHz TCXO reference frequency synchronization

- Package Type: Compact BGA (Ball Grid Array)

- Stencil Compatibility: Amaoe MT Series / Universal MediaTek RF Transceiver BGA Stencil (0.12mm)

- Recommended Solder Paste: 183°C Leaded Solder Paste

Usage:

- Circuit Function:

* Serves as the primary RF interface between the cellular antenna front-end modules (Power Amplifiers / Duplexers) and the digital processor baseband modem.

- Compatible Smartphone Models:

* Xiaomi / Redmi / POCO:

- Redmi Note 8 Pro (Begonia - Helio G90T)

- Redmi Note 10 5G / POCO M3 Pro 5G (Dimensity 700)

- Redmi 10X 4G, Redmi Note 9, Redmi 9T

* Samsung:

- Galaxy A22 5G (SM-A226B) / Galaxy A32 5G (MediaTek Dimensity variants)

* Realme / Oppo:

- Realme 6, Realme 7, Realme 8 5G; Oppo Reno series (MTK variants)

* Vivo / Infinix / Tecno:

- Infinix Note 8, Note 10, Zero 8; Tecno Camon 16 series

- Common Motherboard Fault Symptoms & Diagnosis:

* "No Service" / "Searching..." with Healthy Baseband & IMEI:

- IMEI and Baseband firmware are present in settings, but the device displays "No Service" or searches indefinitely without latching onto local telecom operators.

* "Emergency Calls Only":

- Phone can detect network broadcast carriers, but transmit handshake fails due to a damaged TX up-conversion stage inside MT6186MV.

* 2G Works, but No 4G LTE / 5G Data:

- Handset successfully connects to 2G GSM for standard calls, but fails to register on high-frequency LTE or 5G bands.

* Secondary Line Power Leakage / Short:

- Short circuit or micro-leakage on VIO 1.8V, VRF, or auxiliary LDO supply rails surrounding the transceiver, resulting in battery drain or dead phone symptoms.

* Physical Drop / Cold Solder Joints:

- Handset loses network connectivity following a mechanical drop; resolved by desoldering, reballing, and resoldering MT6186MV.