My invention by Toby

In 1980's there was one invention that shocked the whole world, the mobile phone even though it was very big compared to the mobile phone these days.

when the mobile phone was launched in 1980's, the people gave the phone a nick name,"big water bottle", since then i have an idea why not use the phone as a water bottl, right now, my idea is let the phone reborn as a water bottle.

First of al, we need to remake the shell of the phone of the phone, it would be empty in the middle, use the technology of the warm keeping case, and inside the water bottle should be rounded sothat you could keep your own water bottle inside, the concept is like a coffin.

Now it could also be a calculator. The principal is simple just insert the calculator to the key pad and people won't know that your stylish phone is a calculator.

This kind of invention, I think has the potential to be popular, so i hope, i would be able to put the inventionin the market, imight be able to earn alot of money from this creative design.

This product might raise the staus of mobile phone, if you have any new idea please tell me.