To configure your 3G or 4G LTE mobile or dongle to browse internet or to send MMS with M1 in Singapore apply below APN settings.
525 03 M1 APN Settings
Carrier2, Carrier3, : unique APN alternative configurations
Search for GPRS, internet, MMS APN settings for mobile networks, mobile phones or mobile platforms.
Local sites: United States Australia Brazil Canada China Germany France Indonesia India Japan South Korea Sri Lanka Netherland Norway New Zealand Pakistan Russia Singapore Thailand United Kingdom South Africa