What is the best one to use? What is less of a battery drain?
you can only tether to other iDevice or laptops with mywi, u can not use mywi to provide wifi for blackberrys, idk about the androids but i know blackberrys wont work
Can you only do tethering by jail breaking your iPhone?
That depends on your carrier. Some carrier allows native tethering. If your carrier doesn't allow it then you will need to JB.
That.
Most carriers allow tethering or offer it for an additional monthly fee. My carrier (AT&T) offers tethering now, but you pay more than twice for the same 2gb data plan -- AND they've somehow got it set not to work with a wifi-only iPad. I can't figure that one out. Every other mobile data plan I've ever heard of can't tell whether you're using an iPad or a GPS-enabled blender.![]()
You must've been doing some heavy data usage.Native tethering only allows you to use USB/bluetooth. iPad requires wi-fi. If you want to use wifi then you need to JB and use PDANet or Mywi.
My carrier (HK vodafone) definitely can tell if you are using your phone as modem. I was charged for $100USD for my data (tethering) even i had unlimited data plane. I believe all carrier can tell if you are tethering or not but whether or not they do anything is a different story. Almost all people said ATT won't do anything but in my case, i was charged.