Having become wildly popular in important smartphone markets like India and having amassed a userbase of more than 100 million, Truecaller is looking to raise $100 million to help expand into new markets. The caller ID app has already managed to raise $80 million from big-name investors like Kleiner Perkins and Sequoia Capital in a funding round that would put the company’s value at $1 billion if it successfully reached its goal, which it’s almost certainly going to.