Hello,

My hotlink prepaid is mini sim 2g(t plan) and micro sim 3g(b plan), if I go to kiosk change the sim card, sim only upgrade to 4g, but still can use 2g and my old plan and all term and conditions still remain same?
Do you have this experience, after go to kiosk change sim for an example inactive period still same, *what# and their choose still there...., no need worry on it, just 2g or 3g upgrade to 4g only? Maybe not data plan still deduct very small money, but we unable see any amount is deduct situation. or better go to shop pay money ask cut sim?

If I have one smart phone, I already have one sim is 4g, then I put another 4g sim. My phone can get both is 4g? or one is 4g(data) and one auto jump to 2g(call)?
No matter how, both sim still can receive a call and sms?

I think one year++ spoil one 2g phone, I also don't know buy what, any can recommend 2g phone model can last longer and easy purchase original battery replacement?
So If I use one smart phone with 3 sim and approx. one year I will remove and change the sim approx. up to 8 times, do you have this experience phone will easy damage? or sim will easy damage? or both will easy damage? We cannot frequency remove the sim or micro sd?

Hope someone can help above, I also don't know how.

Thank you.