Can you use the $10 refill card on this phone?
Refill every 3 months?
This is for a child for emergency use only. How many minutes does $10 give you?
Can you turn up the ring volume as a reviewer claims it doesn't ring loud?
Yes, you can use the $10..00 refill card with this phone. T-Mobile will deduct $3.00 monthly for service, whether you use it or not. Any refill card gives you 10c minutes and texts. As for the ring volume, it's loud enough for me. I can easily hear it using the default ringtone. If the default ringtone isn't loud enough, just switch to another. It comes with quite a few ringtones already preloaded on the phone.