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.
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