What can possibly happen to my iPhone if I keep changing two SIM cards again and again?

Question

I Have two SIM cards. The first one is MPT, and it cuts Internet fees per minute. The second one is Telenor, which cuts per MB usage.
I Bought the second sim to play Internet games (Total Conquest, DH5). Those games don't use much MB.
The first one don't have a good internet connection, but the second one does.
Here's the thing.
        Surfing Safari and searching apps and games in App Store use a lot of data. Other apps like Flipboard and Facebook also use a lot of MB. So the phome bills go up when I use the second one. But its perfect to play games with.
        Surfing Safari and App Store also use time and MB. Playing games also take a lot of time. The first one have a bad connection and it's a trouble for playing games like Total Conquest, my main game.
I Want to use both of them on the same iPhone (i only have one). Like changing again and again. About everyday. What can happen to my iPhone?

Answer 1

Michael's description is sound, the SIM cards may take a bit of wear over time withthis...
You could get a 3G/4G wifi hotspot and give your computer/phone the better data rate that way.
You need to talk to your ISP about how your connection is unstable. Run tests using an Ethernet cable and wifi (to see if the numbers are approx the same)
Provide them your results from pingtest.net and speedtest.net to show your connection is having issues.
Things that might indicate a problem:
>100ms ping
1-2mbps or slower on download/upload means the connection might need repairing.