No matter which network you are using, different service
provider have different strong & weak signal network in Tekong.
Maybe for example, for Sispec, it may be strong signal with SingTel
but weak signal with Starhub. At HQ BMTC, it may be strong signal
for M1 and weak signal for SingTel. I AM JUST QUOTING EXAMPLE (I
will not know which area have good/bad signal).
Thus, it doesn't matter much which service provider you choose. But
there is one kind is good, SingTel Coin/Card Phone. 100% reception
coverage.