session-android/res/xml-mcc226-mnc3/mms_config.xml

<?xml version="1.0" encoding="utf-8"?>
<mms_config version="5">
    <bool name="allowEnablingWapPushSI">false</bool>
    <bool name="enableWapPushSI">true</bool>
    <int name="maxMessageSize">307200</int>
    <int name="maxImageHeight">1200</int>
    <int name="maxImageWidth">1600</int>
    <bool name="useCustomUserAgent">true</bool>
    <bool name="allowEditingSmscAddress">true</bool>
</mms_config>