How did Takada hide her cell phone?

Question

http://www.onemanga.com/Death_Note/99/13/

On the bottom of the page she contacts Light with a "secret phone" but Mello strip searched her so how could she hide it?

Answer 1

A little earlier in the chapter she asks Mello if she could wrap herself in the blanket before she removes her underwear.

In the slit in her bra she has a piece of the Death Note and I assumed that it's where she kept her phone as well.

Considering that those slits are big enough to include padding, a slim cell phone should fit in there with ease.

I don't have the manga in front on me so I can't tell you the page.

It should be in that same chapter though.

Answer 2

She wouldn't have needed to hide it. She killed Mello before he could have used any info on the cell phone. Once he is dead, she could freely have retrieved all her things.