Regulations just passed will allow aircraft passengers in Europe to use their smartphones and tablets without being in airplane mode starting from today.
The European Commission has authorised 3G and 4G communications when aircraft is flying above 3,000m. This is one of the first steps to moving toward in-flight WiFi.
It should be noted that there was never any evidence that pertained to the fact that using mobile data during flight would affect the aircraft in any way. It was merely a safety precaution that was never removed even after it was proven that mobile signals would not interfere with any of the aircraft’s systems.
Though these regulations come into effect now, it is likely that carriers will take time to adjust their own regulations which I should probably mention you are required to abide by.