Hi Seng_Kiat,

Thank for your interest with our recent RM1 roaming promo for 1 year.

The eligible plan for the RM1 roaming promo will be Maxis One Plan 158 & 188.
For Maxis One Plan 158, the RM1 roaming promo is only applicable for Singapore;
while for Maxis One Plan 188, the RM1 roaming promo is applicable for 8 Aseans countries such as Singapore, Thailand, Myamar, Indonesia & etc.

The RM1 roaming pass come with unlimited call & sms at both eligible overseas countries & Malaysia.
For data, it will be usable at both Malaysia & overseas as well except for weekend pass.
For instance, the Maxis One Plan 158 come with 20GB data pool & 20GB weekend data, the 20GB weekend data is usable at both Singapore & Malaysia if you opt for this promo.

For more info, you may refer to http://bit.ly/2otzeC6 to find out more.

TQ