Dear [Pen-friend's name],

I hope this letter finds you well. I wanted to share with you that I recently got a new mobile phone. It is a [brand name] and I am loving it so far.

This phone offers a variety of services such as high-quality camera, long-lasting battery, and fast processing speed. I also enjoy using the various apps that come pre-installed on the phone. I spend quite a bit of time using it for social media, messaging, and browsing the internet.

Overall, I am very happy with my purchase and would highly recommend this brand to anyone in the market for a new phone.

Best,

[Your name]