blog help english spanish portuguese now your mobile number works on wi fi across your devices . so you re always connected . available for whenever you need it whenever you need it always covered always covered travel smart travel smart download tu go on any compatible device register with your o2 or movistar mobile number and you ll be able to make and receive calls send and receive texts and check voicemail across multiple devices . whenever you need it expecting an important call by downloading the app on your smartphone pc tablet or using your web browser you never need to worry if you leave your phone behind or run out of battery . if you don t have a device close by simply pick up another one to keep the conversation flowing . always covered got wi fi then you ve got coverage . with tu go you can make and receive calls send and receive messages and check your voicemail on any connection . travel smart traveling abroad use tu go from any wi fi network in the world and it will come out of your monthly allowance as if you were still at home . where is tu go available peru argentina colombia uk brazil tu go is available for o2 uk pay monthly customers o2 business customers movistar argentina customers movistar peru customers movistar colombia customers and vivo mobile customers . get this app for more information and support uk uk business argentina peru colombia brazil privacy policy cookies policy 2015 telef nica digital limited this site uses cookies to give you a better experience . you can learn more about cookies here .