✔ 最佳答案
Did you try to press the other button, such as press 'off' button a minute and on again.
Check the battery is it enough, even not, charge again and try to press 'on' button , may be you can open it (In my experience).
If problem continue, I suggest you take it to repair. Here is the address of customer service centre:
Room 1703 Hang Lung Centre, 2-20 Paterson Street, Causeway Bay, Hong Kong.
Tel: 2112 0999
Mon - Fri 9 am to 6 pm
Sat 9 am to 1 pm
If no any hardware change, I belivery no any charge.