[inquisitor]

Originally Posted by kimdo

May I know that the APN for Swisscom prepaid sim card?

Yes: Let me google that for you

And, this sim card can be used in Huawei mifi?

You can use every GSM/UMTS SIM card in your Mifi. No need to ask this again and again for each country and network.

Besides, Swisscom just provide day plan only? No weekly plan?

I'm only aware of two monthly plans including 300MB for CHF19,- and 2000MB for CHF39,-, which however can only be ordered from an iPad: Internet iPad - Tarife iPad - iPad 2 - Swisscom - NATEL® data start - NATEL® data easy flex

Will the Swisscom staff helping for the SIM card activation?

They will sell it activated and remember to bring your identity card as the SIM card will need to be registered upon purchase.