Be aware of scammers impersonating as IMDA officers and report any suspicious calls to the police. Please note that IMDA officers will never call you nor request for your personal information. For scam-related advice, please call the Anti-Scam helpline at 1800-722-6688 or go to www.scamalert.sg.

Quality of Service (QoS) Standards for 3G Public Cellular Mobile Telephone Services for Jan- Dec 2011

Service Coverage


The definition of service coverage is based on signal strength. The availability of service coverage is therefore the ability of a network in achieving a minimum signal strength of -100dBm. Of the successful calls established by the mobile networks along expressways, major and secondary roads/ streets, an average of 108,558 samples of signal strength were obtained for each network.


Call Success Rate


This indicator measures the success of a call attempt. A successful call attempt is when the calling party gets a connection to the called party either through a ringing tone or an engaged tone. The call success rate shown below is based on an average of 1367 call attempts per network.

LAST UPDATED: 19 MAY 2022