diff --git a/README.md b/README.md
index ba1ab7a3..7f6e692d 100644
--- a/README.md
+++ b/README.md
@@ -100,6 +100,7 @@ characteristic.value.listen((value) {
 final mtu = await device.mtu.first;
 await device.requestMtu(512);
 ```
+Note that iOS will not allow that you request the MTU size, but will always try to negotiate the highest possible MTU (iOS supports up to MTU size 185)
 
 ## Reference
 ### FlutterBlue API
@@ -119,7 +120,7 @@ await device.requestMtu(512);
 | services                    |  :white_check_mark:  |  :white_check_mark:  | Gets a list of services. Requires that discoverServices() has completed. |
 | state                       |  :white_check_mark:  |  :white_check_mark:  | Stream of state changes for the Bluetooth Device. |
 | mtu                         |  :white_check_mark:  |  :white_check_mark:  | Stream of mtu size changes. |
-| requestMtu                  |  :white_check_mark:  |  :white_check_mark:  | Request to change the MTU for the device. |
+| requestMtu                  |  :white_check_mark:  |                      | Request to change the MTU for the device. |
 
 ### BluetoothCharacteristic API
 |                             |       Android        |         iOS          |             Description            |
@@ -138,4 +139,4 @@ await device.requestMtu(512);
 ## Troubleshooting
 ### Scanning for service UUID's doesn't return any results
 Make sure the device is advertising which service UUID's it supports.  This is found in the advertisement
-packet as **UUID 16 bit complete list** or **UUID 128 bit complete list**.
\ No newline at end of file
+packet as **UUID 16 bit complete list** or **UUID 128 bit complete list**.