[Biker1]

The battery may get so low that while talking it may not be able to accept a charge. I know if my battery is critical, and I plug it in while using data, the battery charge input will be less than the juice it is using for data and the pop up will appear stating the phone will shut off in 10 seconds. Also the battery may be hot enough not to accept a charge. As for the clock, I have seen the pop up on mine but have forgotten if the clock icon shows across the top. I will have to take notice next time.