As Apple, Samsung smartphones fight over young minds, other mobile phone makers target grandparents

But it also has an unusual touch-screen that will only respond when the user presses a bit harder so as to avoid launching applications by mistake, said Fujitsu Europe-Middle East-Africa product marketing director James Maynard.

"You can actually pre-touch and then when you know which button you want to press, you can exert a little bit more pressure," he said.

"It's made to grow with you so as you become more confident you naturally will exert more pressure on to the device."

Kapsys, a French firm, showed off its SmartConnect handset aimed at seniors.