swap sim cards

I have a fairly new Samsung T245G which offers insufficient volume because of my hearing problem.
Can I remove the SIM card from this phone and put it in a LG 800G and save my prepaid minutes?

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"If I buy a new TracFone, can I transfer my remaining minutes and phone number to the new phone?"

"Yes, you can transfer the minutes and phone number into your new TracFone by going to the "Activate/Reactivate Phone" page and select "Existing TracFone Customer". You can also contact our Customer Care Center at 1-800-867-7183 so that a representative can transfer that information."

Source: TracFone Wireless | Prepaid Cell Phone | Pay As You Go | No Contract Cell Phone