I still remember the first time I saw a Siemens ME45 - a black phone with amber lighting and it was water, shock and dust resistant. It was like a stealthy bat-phone. The ME45 internals are identical to the Siemens S45, the company's first GPRS-capable phone. Both are from 2001. A year later the Siemens S45i came out, it added email support. But we're getting ahead of ourselves. Siemens ME45 Siemens S45 Siemens S45i Siemens' history with telephony dates back to the 19th century when the company got into building telephone exchanges (it was building telegraphs before...
Source: https://www.gsmarena.com/counterclockwise_the_history_of_siemens_phones-news-32477.php