A purported sighting of a cheaper iPhone 4 has suggested that Apple might take a new strategy of upgrading the older phone even as it introduces a genuinely new model. Well-known Vietnamese leakers Tinhte have shown a design they say has replaced the glass front and back with plastic, presumably to lower the price. Simultaneously, though, it's believed to be faster than the current model, suggesting a possible speed upgrade, though not necessarily the A5.
