Credit: Robert Triggs / Android AuthorityThe era of 15GB free Gmail storage is ending — at least if you’re not willing to give Google your phone number. Instead, Google is trialing a far lower 5GB storage limit for new accounts opened in select regions, which has understandably upset the apple cart. Thankfully, existing users keep their 15GB free usage.Whether this becomes a permanent limitation for all future Google signups remains to be seen, but the writing is on the wall: Google is making its free storage tier harder to use in the long term unless you’re willing to verify your identity with one of the internet’s most notorious data-gatherers.