making payment mobile phone connected device become norm store app serious detrimental lagging issue make paying app troublesome quirky unreliable far many time go pay something unlock phone open app app sits loading screen nothing minute open saved payment choice let pay noticed tends happen location not offer wifi connectivity not reliable cell service app require connection service order make payment stupid payment option saved transmit info card reader let u go app open ready interface payment machine soon open app lag disgraceful app not rely connecting via wifi cell service order make payment long nfc enabled app open ready make payment seems like crucial piece programming app development severely lacking company like far concerned lag opening payment app unacceptable onestar review high type malfunction need immediately remedied would not recommend anyone addressed fixed