Boss, are you got trading in your CHR to new Merc GLC or not?

Just complain to them gao gao

I belip all mobile operator r the same

Just off your phone or turn on airplane mode when oversea, the moment your hp show oversea network provider name, u will have the risk of being charge for roaming

yup, and many don't understand phone treat roaming into cellular data and cellular network
for cellular data just turn off data roaming
for cellular network you will need to turn on airplane mode, then on wifi or bluetooth if you need it
especially when you are in countries that are in contract with the telco you sign up with

mcmc mandate things like automatic subscription etc to prevent bill shock

so you will be charged for or auto subscribe to roaming if you do
1. outgoing and incoming calls
2. outgoing and incoming sms (if you are able to receive any sms)
in his case voicemail works like receiving incoming calls hence auto subs to roaming

all these charges are on contract basis between telco and the roaming package
these are the typical scenarios you will get charged
A: MY number in MY
B: MY number in SG
C: SG number
D: MY number in SG (your left hand gf travelling with you)

1. A call B, B will get charged & local charge for A, as A is calling using local cell tower, while B is using oversea cell tower.
2. B call A, B will get charged because B is using oversea cell tower, while A not
3. B call C, B will get charged, while C not
4. C call B, both will get charged, particular C might get international charge, why? Because C have to dial international exit code + country code to get to B, so it will get to MY then point back to SG, depending how the call route is being setup C might get international charge or just initial connection charge
5. B call D, both will get charged
the only thing is free is emergency call even there are no roaming partners, you would still be able to make such call

so, make sure to ask both side (your telco & the partners) to prevent bill shock to you and your friends
or just get a tourist sim

Aiyoyo! So much trouble.

Pretty much what you laid out.

I used to work in telco as CS (singapore) so I used to see all these cases so often. Especially when the residents are located at Woodlands and they connect to Malaysian telco and get charged.

When recommend to turn off intl roaming facility, they don't want, but complain phone auto connect to Malaysia telco.

Then ask to set Manual connect in Settings, say very mafan.

You say all liao lor