How to determine if network type is 2G, 3G or 4G

You can put this following method directly in your Utility class:

Kotlin:

/** Usage: `networkTypeClass(telephonyManager.networkType)` */fun networkTypeClass(networkType: Int): String {    when (networkType) {        TelephonyManager.NETWORK_TYPE_GPRS,        TelephonyManager.NETWORK_TYPE_EDGE,        TelephonyManager.NETWORK_TYPE_CDMA,        TelephonyManager.NETWORK_TYPE_1xRTT,        TelephonyManager.NETWORK_TYPE_IDEN,        TelephonyManager.NETWORK_TYPE_GSM        -> return "2G"        TelephonyManager.NETWORK_TYPE_UMTS,        TelephonyManager.NETWORK_TYPE_EVDO_0,        TelephonyManager.NETWORK_TYPE_EVDO_A,        TelephonyManager.NETWORK_TYPE_HSDPA,        TelephonyManager.NETWORK_TYPE_HSUPA,        TelephonyManager.NETWORK_TYPE_HSPA,        TelephonyManager.NETWORK_TYPE_EVDO_B,        TelephonyManager.NETWORK_TYPE_EHRPD,        TelephonyManager.NETWORK_TYPE_HSPAP,        TelephonyManager.NETWORK_TYPE_TD_SCDMA        -> return "3G"        TelephonyManager.NETWORK_TYPE_LTE        -> return "4G"        TelephonyManager.NETWORK_TYPE_NR        -> return "5G"        else -> return "Unknown"    }}

Java:

public String getNetworkClass(Context context) {    TelephonyManager mTelephonyManager = (TelephonyManager)            context.getSystemService(Context.TELEPHONY_SERVICE);    int networkType = mTelephonyManager.getNetworkType();    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:            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:        case TelephonyManager.NETWORK_TYPE_EHRPD:        case TelephonyManager.NETWORK_TYPE_HSPAP:            return "3G";        case TelephonyManager.NETWORK_TYPE_LTE:            return "4G";        case TelephonyManager.NETWORK_TYPE_NR:            return "5G";        default:            return "Unknown";    }}

Thanks to assistance from the Android source code. =]

Based on the Android Developer document & Wikipedia link here i have given comments & define network type.Check the links in comment.

You can use getNetworkType to get Network type.

        public class CommonUtils {    /**     * To get device consuming netowkr type is 2g,3g,4g     *     * @param context     * @return "2g","3g","4g" as a String based on the network type     */    public static String getNetworkType(Context context) {        TelephonyManager mTelephonyManager = (TelephonyManager)                context.getSystemService(Context.TELEPHONY_SERVICE);        int networkType = mTelephonyManager.getNetworkType();        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:                return "2g";            case TelephonyManager.NETWORK_TYPE_UMTS:            case TelephonyManager.NETWORK_TYPE_EVDO_0:            case TelephonyManager.NETWORK_TYPE_EVDO_A:                /**                 From this link https://en.wikipedia.org/wiki/Evolution-Data_Optimized ..NETWORK_TYPE_EVDO_0 & NETWORK_TYPE_EVDO_A                 EV-DO is an evolution of the CDMA2000 (IS-2000) standard that supports high data rates.                 Where CDMA2000 https://en.wikipedia.org/wiki/CDMA2000 .CDMA2000 is a family of 3G[1] mobile technology standards for sending voice,                 data, and signaling data between mobile phones and cell sites.                 */            case TelephonyManager.NETWORK_TYPE_HSDPA:            case TelephonyManager.NETWORK_TYPE_HSUPA:            case TelephonyManager.NETWORK_TYPE_HSPA:            case TelephonyManager.NETWORK_TYPE_EVDO_B:            case TelephonyManager.NETWORK_TYPE_EHRPD:            case TelephonyManager.NETWORK_TYPE_HSPAP:                //Log.d("Type", "3g");                //For 3g HSDPA , HSPAP(HSPA+) are main  networktype which are under 3g Network                //But from other constants also it will 3g like HSPA,HSDPA etc which are in 3g case.                //Some cases are added after  testing(real) in device with 3g enable data                //and speed also matters to decide 3g network type                //https://en.wikipedia.org/wiki/4G#Data_rate_comparison                return "3g";            case TelephonyManager.NETWORK_TYPE_LTE:                //No specification for the 4g but from wiki                //I found(LTE (Long-Term Evolution, commonly marketed as 4G LTE))                //https://en.wikipedia.org/wiki/LTE_(telecommunication)                return "4g";            default:                return "Notfound";        }    }    /**     * To check device has internet     *     * @param context     * @return boolean as per status     */    public static boolean isNetworkConnected(Context context) {        ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);        NetworkInfo netInfo = cm.getActiveNetworkInfo();        return netInfo != null && netInfo.isConnected();    }}

You can use getSubtype() for more details.

int 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;}