Ok... anyways, generally you begin your essay by greeting the person and showing more courtesy. So I'd suggest to include a sentence or two like'
Hope you are keeping well / Hope you are keeping in good health. It's quite funny because after not using my phone for 3 days because I thought it was not working already but when I charged my phone, it was working and I think my phone was just hang and I don't know why.
This sentence is too long and also not delivering a clear idea. Break it into a few lines to arrange a better flow for your ideas.
she bought me this in Saudi Arabia because she is a nurse there
Well.... your ideas are not logically linked. She bought you a phone as she had money and not because you had been a nurse :(