Galaxy S21 5G

SM-G991B

Release G991BXXU1ATLD

Nigeria · ECTAndroid 11Built 12/8/2020

Release information

Firmware identifiers

The software versions and region covered by this firmware update.

Nigeria · CSC ECT · 7 carriers in 2 countries

What is CSC?

CSC is Samsung's region and carrier customization. The networks below are included in this release.

9mobile

MCCMNC62160NWIDNW00108

Emerging Markets Telecommunication Services Ltd.

LTE 1800UMTS 2100GSM 900GSM 1800

Airtel

MCCMNC62120NWIDNW01569

Bharti Airtel Limited

5G 3500LTE 1800UMTS 2100GSM 900GSM 1800

Glo

MCCMNC62150NWIDNW00536

Globacom Ltd

LTE 700LTE 2600UMTS 2100GSM 900GSM 1800

MTN

MCCMNC62130NWIDNW00818

MTN Nigeria Communications Limited

5G 3500LTE 800LTE 2600TD-LTE 3500UMTS 2100GSM 900GSM 1800

Ntel

MCCMNC62140NWIDNW00874

Nigerian Mobile Telecommunications Limited

LTE 900LTE 1800

Smile

MCCMNC62127NWIDNW01152

Smile Communications Nigeria

LTE 800

Lonestar Cell MTN

MCCMNC61801NWIDNW00825

Lonestar Communications Corporation

LTEUMTS 2100GSM 900GSM 1800