i must be the lowest user on here.
I don't have facebook, instagram, snapchat, twitter, or any other social media rubbish.
my works wi-fi is 200MB download and upload. home wi-fi is 200MB download and 12 MB upload. so I use wi-fi at work and home.
if i listen to music it's in the car by either CD (originals) or mp3 on a USB stick so zero data usage there or DAB radio.
if i go to anyones house i will use their wi-fi. if it's slow i'll disconnect otherwise i'll use their internet.
i use on average 100-300MB a month. my usage over the past 4 days has been 4MB lol. over the past 4 days my wi-fi usage has been 1.52GB.
i pay £8 a month for 4GB of data which rolls over for a max of 8GB total. i usually have around 8GB of data to use every month.