Can't connect: dns error

[volts10]

Every so often - might be once a week, but might go for a month - my phone won't send the info and I get "can't connect: dns error". Closing and reopening the program or shutting the phone off for a while and then back on does not help. The only way to solve the problem is to remove the battery. Any ideas why it does this? Thanks.

[ATSupport]

What's the phone model and who's the carrier? Looks like a data plan issue.