diff --git a/en-us/api/QuecPythonClasslib.md b/en-us/api/QuecPythonClasslib.md
index df96474..6293807 100644
--- a/en-us/api/QuecPythonClasslib.md
+++ b/en-us/api/QuecPythonClasslib.md
@@ -379,7 +379,7 @@ Manually modify DNS information, you can check whether the modification is succe
| Parameter | Type | Description |
| ---------- | ------ | ------------------------------------------------------------ |
| profileIdx | int | PPDP context index. Range: 1-8 [volte version with the largest default PID is used to register IMS, please do not repeat the operation]. It is generally set to 1, if set as 2-8, the private APN and password may be required. |
-| sim_id | int | simid, range：0/1, default 0. |
+| sim_id | int | simid, range：0/1, default 0，only SIM0 is supported now。 |
| priDns | string | Primary DNS |
| secDns | string | Secondary DNS |
@@ -411,7 +411,7 @@ Get APN Information of user. If only simID is specified, the default APN is obta
| Parameter | Type | Description |
| ---------- | -------- | ------------------------------------------------------------ |
-| simid | int | simid, range：0/1 |
+| simid | int | simid, range：0/1；Only 1606 platform supports 0 or 1, other platforms can only be 0. |
| profileIdx | int | PDP context index. Range for ASR : 1-8,range for unisoc : 1-7 |
* Return Value
@@ -764,13 +764,13 @@ Note: The prerequisite for successfully obtaining IMSI, ICCID, and phone number
Send APDU command to SIM card.
-Note : Currently, only the ASR-1601 platform supports this function.
+Note : Currently, only the ASR-1603 platform supports this function.
* Parameter
| Parameter | Type | Description |
| --------- | ------ | ------------------------------------------------------------ |
-| simId | int | SIM card id, range : 0 or 1 |
+| simId | int | SIM card id, range : 0 or 1;only SIM0 is supported now |
| cmd | string | command passed on by the MT to the SIM in the format as described in GSM 51.011 |
* Return Value
@@ -2380,15 +2380,15 @@ This function sets APN. After setting, you need to restart or switch to mode 0 a
The number of parameters is 2：net.setApn(apn, simid)
The number of parameters is 7：net.setApn(pid, iptype, apn, usrname, password, authtype, simid)
-| Parameter | Type | Description |
-| ----- | -------- | -------------------------------------------- |
-| pid | int | PDP context index. |
-| iptype | int | IP type. 0-IPV4, 1-IPV6, 2-IPV4 and IPV6. |
-| apn | string | apn name, The maximum length is 63 bytes. |
-| usrname | string | user name, The maximum length is 63 bytes. |
-| password | string | password, The maximum length is 63 bytes. |
-| authtype | int | Authentication type,0-No authentication, 1-PAP, 2-CHAP, 3-PAP AND CHAP(just for CATM Platform)|
-| simid | int | simid
0 : SIM card 1
1 : SIM card 2 |
+| Parameter | Type | Description |
+| --------- | ------ | ------------------------------------------------------------ |
+| pid | int | PDP context index. |
+| iptype | int | IP type. 0-IPV4, 1-IPV6, 2-IPV4 and IPV6. |
+| apn | string | apn name, The maximum length is 63 bytes. |
+| usrname | string | user name, The maximum length is 63 bytes. |
+| password | string | password, The maximum length is 63 bytes. |
+| authtype | int | Authentication type,0-No authentication, 1-PAP, 2-CHAP, 3-PAP AND CHAP(just for CATM Platform) |
+| simid | int | simid,（Only 1606 platform supports 0 or 1, other platforms can only be 0）
0 : SIM card 1
1 : SIM card 2 |
* Return Value
@@ -2422,10 +2422,10 @@ This function obtains the current APN.
The number of parameters is 2：net.setApn(pid, simid)
The number of parameters is 1：net.setApn(simid)
-| Parameter | Type | Description |
-| ----- | -------- | -------------------------------------------- |
-| pid | int | PDP context index. |
-| simid | int | simid
0 : SIM card 1
1 : SIM card 2 |
+| Parameter | Type | Description |
+| --------- | ---- | ------------------------------------------------------------ |
+| pid | int | PDP context index. |
+| simid | int | simid, (Only 1606 platform supports 0 or 1, other platforms can only be 0)
0 : SIM card 1
1 : SIM card 2 |
* Return Value
diff --git a/zh-cn/api/QuecPythonClasslib.md b/zh-cn/api/QuecPythonClasslib.md
index 1d849fb..38f2caa 100644
--- a/zh-cn/api/QuecPythonClasslib.md
+++ b/zh-cn/api/QuecPythonClasslib.md
@@ -380,7 +380,7 @@ if __name__ == '__main__':
| 参数 | 参数类型 | 参数说明 |
| ---------- | -------- | ------------------------------------------------------------ |
| profileIdx | int | PDP索引，ASR平台范围1-8，展锐平台范围1-7，一般设置为1，设置其他值可能需要专用apn与密码才能设置成功 |
-| sim_id | int | simid, 范围：0 or 1 （默认为0） |
+| sim_id | int | simid, 范围：0 or 1 ，默认为0，目前仅支持0 |
| priDns | string | 需要设置的自定义DNS服务器 |
| secDns | string | 需要设置的自定义DNS服务器 |
@@ -412,10 +412,10 @@ if __name__ == '__main__':
* 参数
-| 参数 | 参数类型 | 参数说明 |
-| ---------- | -------- | -------------------------------------------------- |
-| simid | int | simid，范围：0/1 |
-| profileIdx | int | 可选参数，PDP索引，ASR平台范围1-8，展锐平台范围1-7 |
+| 参数 | 参数类型 | 参数说明 |
+| ---------- | -------- | ------------------------------------------------------ |
+| simid | int | simid，范围：0/1；仅1606平台支持0/1双卡，其它平台只有0 |
+| profileIdx | int | 可选参数，PDP索引，ASR平台范围1-8，展锐平台范围1-7 |
* 返回值
@@ -789,13 +789,13 @@ bytearray(b'\r\nERROR\r\n\n
将命令APDU通过modem传递给SIM卡，然会返回响应APDU。
-注意：当前仅ASR-1601平台支持。
+注意：当前仅ASR-1603平台支持。
* 参数
| 参数 | 参数类型 | 参数说明 |
| ----- | -------- | ------------------------------------------------------------ |
-| simId | int | sim id, 范围：0 or 1 |
+| simId | int | sim id, 范围：0 or 1 ，目前仅支持0 |
| cmd | string | command passed on by the MT to the SIM in the format as described in GSM 51.011 |
* 返回值
@@ -2434,7 +2434,7 @@ sms.setCallback(cb)
| usrname | string | 用户名，可为空，最大长度不超过64字节 |
| password| string | 用户名，可为空，最大长度不超过64字节 |
| authtype| int | 加密方式，0-不加密，1-PAP，2-CHAP，3-PAP AND CHAP(CATM平台支持)|
-| simid | int | simid
0 - 卡1
1 - 卡2 |
+| simid | int | simid，(仅1606平台支持0/1双卡，其它平台只有0)
0 - 卡1
1 - 卡2 |
* 返回值
@@ -2469,10 +2469,10 @@ sms.setCallback(cb)
具体释义如下：
-| 参数 | 参数类型 | 参数说明 |
-| ----- | -------- | ------------------------------- |
-| pid | int | PDP索引 |
-| simid | int | simid
0 - 卡1
1 - 卡2 |
+| 参数 | 参数类型 | 参数说明 |
+| ----- | -------- | ------------------------------------------------------------ |
+| pid | int | PDP索引 |
+| simid | int | simid，(仅1606平台支持0/1双卡，其它平台只有0)
0 - 卡1
1 - 卡2 |
* 返回值