We run the biggest dedicated customer service fleet in Hong Kong, providing world-class and round-the-clock support, locally and internationally. Just call our hotline whenever you experience problems using your mobile phone overseas.

Dialing from mobile:
1O1O Product Hotline: + 852 2988 1010
1O1O Customer Service Hotline: + 852 2888 1010
Free for all customers and roaming charges are waived (only for 1O1O Mobile Number).

Dialing from fixed line
Roaming Destinations Dialing Method
Australia [0011] 800 2888 1010
Austria [00] 800 2888 1010
Belgium [00] 800 2888 1010
Brazil [0021] 800 2888 1010
Canada [011] 800 2888 1010
China [00] 800 2888 1010
Denmark [00] 800 2888 1010
Finland [990] 800 2888 1010
France [00] 800 2888 1010
Germany [00] 800 2888 1010
Hawaii [011] 800 2888 1010
Ireland [00] 800 2888 1010
Israel [014] 800 2888 1010
Japan [00] 800 2888 1010
Macau [00] 800 2888 1010
Malaysia [00] 800 2888 1010
New Zealand [00] 800 2888 1010
Norway [00] 800 2888 1010
Philippines [00] 800 2888 1010
Portugal [00] 800 2888 1010
South Korea [001] or [002] 800 2888 1010
Singapore [001] 800 2888 1010
Spain [00] 800 2888 1010
Sweden [00] 800 2888 1010
Switzerland [00] 800 2888 1010
Taiwan [00] 800 2888 1010
Thailand [001] 800 2888 1010
UK [00] 800 2888 1010
USA [011] 800 2888 1010
The above international IDD prefixes are required if dialing from a land line.
 
Notes:
1. Please use landline phone to access the international toll-free number.
2. Customers can call +852 2888 1010 for roaming destinations other than the above listed (IDD charges may apply).