Over drinks on Friday, a friend of mine shared how her travel mates and were able to constantly upload their photos on Facebook on the go without incurring bill shocks for her data roaming , bringing an extra phone or the need to change SIM card. (I noticed she has been uploading a lot of photos in every key destination she went).
Apparently, she got herself a Mifi (mobile wireless router). She would then purchase a data plan SIM card in each of the country she went to. When it is time to mass upload the photos on their social media profiles, she would switch on the mifi and all her travelmates would tap on the wireless access to do what they need on their mobile phones.
Furthermore, the mifi can be used for wireless access on laptops and tablets back in the hotel.
Now that is a good idea ! I might get a mifi router myself.
If you are a first time visitor to Shanghai, you might want to do that too.