I started using mytello 2 weeks ago after I found that my Etisalat ( UAE where what's voice calls are not available ) bill for calls to UAE since I have been quarantined in Ukraine was astronomical. Vodafone.ua is not much cheaper. Mytello is easy to set up, user friendly and the call quality is excellent. I have not experienced dropped calls or bad connections. Charged it with 25 $s at the outset and made all the calls I needed to UAE and still have 3.95$s in credit. Another nice feature is that the caller ID displays my personal Ukraine number to my callers.