Detect network connection type on Android

If the problem is to find whether the phone's network is connected and fast enough to meet your demands you have to handle all the network types returned by getSubType().

It took me an hour or two to research and write this class to do just exactly that, and I thought I would share it with others that might find it useful.

Here is a Gist of the class, so you can fork it and edited it.

package com.emil.android.util;import android.content.Context;import android.net.ConnectivityManager;import android.net.NetworkInfo;import android.telephony.TelephonyManager;/** * Check device's network connectivity and speed  * @author emil http://stackoverflow.com/users/220710/emil * */public class Connectivity {    /**     * Get the network info     * @param context     * @return     */    public static NetworkInfo getNetworkInfo(Context context){        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);        return cm.getActiveNetworkInfo();    }    /**     * Check if there is any connectivity     * @param context     * @return     */    public static boolean isConnected(Context context){        NetworkInfo info = Connectivity.getNetworkInfo(context);        return (info != null && info.isConnected());    }    /**     * Check if there is any connectivity to a Wifi network     * @param context     * @return     */    public static boolean isConnectedWifi(Context context){        NetworkInfo info = Connectivity.getNetworkInfo(context);        return (info != null && info.isConnected() && info.getType() == ConnectivityManager.TYPE_WIFI);    }    /**     * Check if there is any connectivity to a mobile network     * @param context     * @return     */    public static boolean isConnectedMobile(Context context){        NetworkInfo info = Connectivity.getNetworkInfo(context);        return (info != null && info.isConnected() && info.getType() == ConnectivityManager.TYPE_MOBILE);    }    /**     * Check if there is fast connectivity     * @param context     * @return     */    public static boolean isConnectedFast(Context context){        NetworkInfo info = Connectivity.getNetworkInfo(context);        return (info != null && info.isConnected() && Connectivity.isConnectionFast(info.getType(),info.getSubtype()));    }    /**     * Check if the connection is fast     * @param type     * @param subType     * @return     */    public static boolean isConnectionFast(int type, int subType){        if(type==ConnectivityManager.TYPE_WIFI){            return true;        }else if(type==ConnectivityManager.TYPE_MOBILE){            switch(subType){            case TelephonyManager.NETWORK_TYPE_1xRTT:                return false; // ~ 50-100 kbps            case TelephonyManager.NETWORK_TYPE_CDMA:                return false; // ~ 14-64 kbps            case TelephonyManager.NETWORK_TYPE_EDGE:                return false; // ~ 50-100 kbps            case TelephonyManager.NETWORK_TYPE_EVDO_0:                return true; // ~ 400-1000 kbps            case TelephonyManager.NETWORK_TYPE_EVDO_A:                return true; // ~ 600-1400 kbps            case TelephonyManager.NETWORK_TYPE_GPRS:                return false; // ~ 100 kbps            case TelephonyManager.NETWORK_TYPE_HSDPA:                return true; // ~ 2-14 Mbps            case TelephonyManager.NETWORK_TYPE_HSPA:                return true; // ~ 700-1700 kbps            case TelephonyManager.NETWORK_TYPE_HSUPA:                return true; // ~ 1-23 Mbps            case TelephonyManager.NETWORK_TYPE_UMTS:                return true; // ~ 400-7000 kbps            /*             * Above API level 7, make sure to set android:targetSdkVersion              * to appropriate level to use these             */            case TelephonyManager.NETWORK_TYPE_EHRPD: // API level 11                 return true; // ~ 1-2 Mbps            case TelephonyManager.NETWORK_TYPE_EVDO_B: // API level 9                return true; // ~ 5 Mbps            case TelephonyManager.NETWORK_TYPE_HSPAP: // API level 13                return true; // ~ 10-20 Mbps            case TelephonyManager.NETWORK_TYPE_IDEN: // API level 8                return false; // ~25 kbps             case TelephonyManager.NETWORK_TYPE_LTE: // API level 11                return true; // ~ 10+ Mbps            // Unknown            case TelephonyManager.NETWORK_TYPE_UNKNOWN:            default:                return false;            }        }else{            return false;        }    }}

Also make sure to add this permission to you AndroidManifest.xml

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission>

Sources for network speeds include wikipedia & http://3gstore.com/page/78_what_is_evdo_mobile_broadband.html

To get a more precise (and user friendly) information about connection type. You can use this code (derived from a @hide method in TelephonyManager.java).

This method returns a String describing the current connection type.
i.e. one of : "WIFI" , "2G" , "3G" , "4G" , "5G" , "-" (not connected) or "?" (unknown)

Remark: This code requires API 25+, but you can easily support older versions by using int instead of const. (See comments in code).

public static String getNetworkClass(Context context) {    ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);          NetworkInfo info = cm.getActiveNetworkInfo();    if (info == null || !info.isConnected())        return "-"; // not connected    if (info.getType() == ConnectivityManager.TYPE_WIFI)        return "WIFI";    if (info.getType() == ConnectivityManager.TYPE_MOBILE) {        int networkType = info.getSubtype();        switch (networkType) {            case TelephonyManager.NETWORK_TYPE_GPRS:            case TelephonyManager.NETWORK_TYPE_EDGE:            case TelephonyManager.NETWORK_TYPE_CDMA:            case TelephonyManager.NETWORK_TYPE_1xRTT:            case TelephonyManager.NETWORK_TYPE_IDEN:     // api< 8: replace by 11            case TelephonyManager.NETWORK_TYPE_GSM:      // api<25: replace by 16                return "2G";            case TelephonyManager.NETWORK_TYPE_UMTS:            case TelephonyManager.NETWORK_TYPE_EVDO_0:            case TelephonyManager.NETWORK_TYPE_EVDO_A:            case TelephonyManager.NETWORK_TYPE_HSDPA:            case TelephonyManager.NETWORK_TYPE_HSUPA:            case TelephonyManager.NETWORK_TYPE_HSPA:            case TelephonyManager.NETWORK_TYPE_EVDO_B:   // api< 9: replace by 12            case TelephonyManager.NETWORK_TYPE_EHRPD:    // api<11: replace by 14            case TelephonyManager.NETWORK_TYPE_HSPAP:    // api<13: replace by 15            case TelephonyManager.NETWORK_TYPE_TD_SCDMA: // api<25: replace by 17                return "3G";            case TelephonyManager.NETWORK_TYPE_LTE:      // api<11: replace by 13            case TelephonyManager.NETWORK_TYPE_IWLAN:    // api<25: replace by 18            case 19: // LTE_CA                return "4G";            case TelephonyManager.NETWORK_TYPE_NR:       // api<29: replace by 20                return "5G";            default:                return "?";         }    }    return "?";}

You can use getSubtype() for more details. Check out slide 9 here: http://dl.google.com/io/2009/pres/W_0300_CodingforLife-BatteryLifeThatIs.pdf

ConnectivityManager mConnectivity = null;TelephonyManager mTelephony = null;// Skip if no connection, or background data disabledNetworkInfo info = mConnectivity.getActiveNetworkInfo();if (info == null || !mConnectivity.getBackgroundDataSetting()) {    return false;}// Only update if WiFi or 3G is connected and not roamingint netType = info.getType();int netSubtype = info.getSubtype();if (netType == ConnectivityManager.TYPE_WIFI) {    return info.isConnected();} else if (netType == ConnectivityManager.TYPE_MOBILE    && netSubtype == TelephonyManager.NETWORK_TYPE_UMTS    && !mTelephony.isNetworkRoaming()) {        return info.isConnected();} else {    return false;}

Also, please check out Emil's answer for a more detailed dive into this.