The high-speed third-generation (3G) cellular networks will be available at all the 16 train stations on the North-East Line (NEL) by next month.

Since September, contractors appointed by M1, SingTel and StarHub have been working through the night in NEL tunnels to upgrade equipment such as antenna and signal repeaters at the wholly-underground subway line which runs from HarbourFront through to Punggol.

Read Tham Yuen-C's full story in Monday's edition of The Straits Times.