Is there a word limit for texting other brands of mobile phones with Xiaomi?

There are restrictions. The word limit of SMS is not determined by the mobile phone brand, but by the operator or the country. Such as China Mobile, China Telecom and China Unicom. Generally, the maximum number of short messages is 70 words or 140 (technically, short messages can be split into multiple messages, but the final recipients will automatically merge them when they read them). Therefore, when Xiaomi mobile phone sends text messages to other brands of mobile phones, it also needs to comply with the operator's word limit.