update help doc

Author: yztz

README.md

@@ -37,7 +37,7 @@
 * [新] HyperOS支持
 * [新] 多语言支持
 * 支持多卡选择
-* 无联网权限
+* **无联网权限**
 * Material Design 3
 * 基于excel数据格式导入
 * 自动获取短信变量名

README_EN.md

@@ -36,7 +36,7 @@ It has been nearly 4 years since this project was launched. This update brings a
 * [New] HyperOS support
 * [New] Multi-language support
 * Dual-SIM selection support
-* No internet permission required
+* **No internet permission required**
 * Material Design 3
 * Import based on Excel data format
 * Automatic retrieval of SMS variable names
@@ -69,6 +69,7 @@ It has been nearly 4 years since this project was launched. This update brings a
 
 
 ## Basic Usage
+
 1. Import data
 2. Select the recipient phone number column
 3. Edit SMS content
@@ -81,6 +82,7 @@ It has been nearly 4 years since this project was launched. This update brings a
 > 3. Please be aware that carriers usually impose sending limits. For example, some carriers limit users to 200 messages/hour and 1,000 messages/day. Exceeding these limits may result in restricted sending/receiving capabilities.
 
 ## Excel Format Requirements
+
 | Column Name | Column Name | Column Name | ... |
 |-------------|-------------|-------------|-----|
 | Data        | Data        | Data        | ... |

app/src/main/res/raw-zh-rCN/help.md

@@ -1,9 +1,11 @@
 ## 基本使用
 1. 导入数据
-2. 编辑短信内容
-3. 选择号码变量
-4. 选择收件人号码列
-5. 发送
+2. 选择收件人号码列
+3. 编辑短信内容
+4. 选择 SIM 卡
+5. 开始发送
+
+> 提示：MsgGo 支持其他 App 将 Excel 文件通过分享/发送的方式来导入数据！
 
 ## Excel格式要求
 | 列名  | 列名 | 列名 | ... |
@@ -13,9 +15,10 @@
 | ... |    |    |     |
 
 注：
-1. （未测试）兼容所有excel格式
+1. 兼容.xls/.xlsx格式
 2. Excel行数限制：200，文件大小限制：50MB
 3. ***发送延迟不要过短，否则可能存在拦截问题***
+4. 已知运营商一般存在发送限制，例如移动为200条/小时，1000条/天，超出后可能会被限制收发
 
 ## 魔法变量
 

app/src/main/res/raw/help.md

@@ -1,21 +1,26 @@
 ## Basic Usage
+
 1. Import data
-2. Edit SMS content
-3. Select variable names
-4. Choose the recipient phone number column
-5. Send
+2. Select the recipient phone number column
+3. Edit SMS content
+4. Select SIM card
+5. Start sending
+
+Tip: MsgGo allows you to import data by sharing or sending Excel files from other apps!
 
 ## Excel Format Requirements
+
 | Column Name | Column Name | Column Name | ... |
 |-------------|-------------|-------------|-----|
 | Data        | Data        | Data        | ... |
 | Data        | Data        | Data        | ... |
 | ...         |             |             |     |
 
 Notes:
-1. (Untested) Compatible with all Excel formats.
+1. Compatible with .xls/.xlsx formats
 2. Excel rows number limit: 200, size limit: 50MB
-3. ***Do not set the sending delay too short, or you may encounter carrier blocking issues.***
+3. Do not set the sending delay too short, or you may encounter carrier blocking issues.
+4. Please be aware that carriers usually impose sending limits. For example, some carriers limit users to 200 messages/hour and 1,000 messages/day. Exceeding these limits may result in restricted sending/receiving capabilities.
 
 ## Magic Variables