Because in ICF coaches, it is 110V DC current. This makes your phone screen responding very badly. The source of the power is the battery which is below the coach, which gets charged during the run of train. In LHB, source is the generator at the front and the rear and the current in an AC current.

If your phone "hangs" or the touchscreen becomes unresponsive while charging on a train in 2026, the likely culprit is electrical noise or poor grounding from the train’s power supply. Many train inverters produce "Modified Sine Wave" power rather than the "Pure Sine Wave" power found in homes. This creates electromagnetic interference (EMI) that confuses the capacitive sensors in your phone's screen, making it think you are touching it when you aren't (ghost touches). In 2026, this is especially common with high-wattage fast chargers or low-quality cables that lack proper shielding. To fix this, a supportive tip is to use a three-pin universal adapter that provides better grounding, or simply charge your phone via a portable power bank while on the move. Most 2026 train technicians also suggest avoiding charging between 11 PM and 5 AM, as some rail systems fluctuate voltage during those hours.