M1 is one of the three major full service communications providers in Singapore. It offers a suite of mobile voice-and-data communication services over its 2G/3G/3.5G/4G/LTE-A network, including international-call services to both mobile- and fixed-line customers. These include SMS, MMS, WAP, GPRS, 3G, 3.5G and 4G and was the first Singapore operator to launch a nationwide 4G LTE and 4G LTE-A network. It also offers prepaid mobile services, such as prepaid data plans, under its M Card brand. It is one of the operators in Singapore to offer a prepaid 4G service.
M1 offered GSM services to its customers upon its entry into the mobile-communications market in 1997. In 1998, M1 introduced CDMA as the second mobile network in Singapore. However, customers on the CDMA network were migrated onto its GSM network in 2001. This was due to the CDMA network spectrum being earmarked for 3G service developments.
The company also launched Singapore's first mobile broadband services in 2006, named M1 Broadband, and introduced fixed broadband services in 2008. In 2010, it launched Singapore's first fibre broadband service.
IDA announced that it will fine M1 S$1.5 million for its January network incident.
On 25 September, M1, along with six other ISPs, submitted a joint-response asking the IDA to reject OpenNet's consolidation request.
On 26 July, M1 announced a new Internet service called MiBox, comprising a bundled Android set-top box and a mixture of free and premium chargeable content and applications.
M1 announced in May that it will invest $11 million to further enhance its networks. The project was fully completed by the third quarter of 2013.
M1 launches Singapore's first prepaid 4G mobile plans.
In April, M1 announced that it would spend up to $85 million to modernise its mobile networks, as well as to deploy a nationwide 3G radio network on the 900 MHz frequency band. The project was completed by the first quarter of 2014.
M1's 3G mobile network in the southwestern part of Singapore was disrupted on 15 January. The Infocomm Development Authority of Singapore (IDA) investigated the service disruption under its Code of Practice for Telecommunication Service Resiliency.
Enters the fixed broadband industry in Singapore on 4 August 2008. It is the fourth telecommunication company to enter the fixed broadband industry, after StarHub, SingNet and Pacnet. Customers of the fixed broadband service will connect to M1 broadband via StarHub Cable's open access network.
Introduced Singapore's only pre-paid card with free incoming calls.
On 31 August 2005, Telekom Malaysia and Khazanah Nasional raised their stake in MobileOne. SunShare Investments bought a total of 4.023 million shares on the open market over three trading days from Thursday last week. The purchases raised its stake in the mobile telecommunications services provider from 23.64% to 24.04%.