By Dave Snelling We might now be addicted to our feature-packed iPhones but 25 years ago all many of us wanted was a Nokia 3210. This simple device, which was first released back in 1999, went on to sell over 150 million units worldwide making it one of the most popular call makers ever made. Now this classic feature phone appears to be making a comeback with upgrades aimed at bringing it up to speed with the modern era.e A recently leaked image claims to show what’s coming next from HMD Global – the firm that now makes Nokia devices – and it’s all about that 3210. Marketing material, revealed…