You can hard reset the Huawei Ascend P1s using the same procedures as for other Huawei mobile phones. The procedures are the same as that for the Huawei Mate S mobile phone. Much like other mobile phones most manufactures appear to use the same process for all the newer phones as can also be seen in the Lumia 520 range of mobile phones.
Below you can see the process to factory reset or hard reset the Huawei Ascend P1s. There are two methods like most mobile phone companies. There is the option to reset the phone by manually pushing certain buttons in a certain sequence. Then there is usually also the option of using the menu and the software to reset the Huawei Ascend P1s.
You can see below that the first the the most popular as you turn off the phone and then proceed to push buttons without the need to enter the menu system. Always backup your data as once the phone has been hard reset it is impossible to retrieve the data again. The delete is permanent and most people prefer to backup their data such as internet settings as well as photos, video and their APN settings.
Hard Reset will erase all of your data
All described operations you are doing at your own risk.
Hard Reset Huawei Ascend P1s (Manual)
Hard Reset Huawei Ascend P1s (Menu)