TLSv1.2 problem on Android 4.3

crash.log

java.net.UnknownServiceException: Unable to find acceptable protocols.
isFallback=false, modes=[ConnectionSpec(cipherSuites=[
TLS_AES_128_GCM_SHA256,
TLS_AES_256_GCM_SHA384,
TLS_CHACHA20_POLY1305_SHA256,
TLS_AES_128_CCM_SHA256,
TLS_AES_256_CCM_8_SHA256,
TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384,
TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256,
TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256,
TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA,
TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
TLS_RSA_WITH_AES_128_GCM_SHA256,
TLS_RSA_WITH_AES_256_GCM_SHA384,
TLS_RSA_WITH_AES_128_CBC_SHA,
TLS_RSA_WITH_AES_256_CBC_SHA,
SSL_RSA_WITH_3DES_EDE_CBC_SHA
], tlsVersions=[TLS_1_2], supportsTlsExtensions=true)],
supported protocols=[SSLv3, TLSv1]

TLS12SocketFactory.java

class TLS12SocketFactory extends SSLSocketFactory {

	public static final String TLS_1_2 = "TLSv1.2";

	private static final String[] TLS_1_2_ONLY = { TLS_1_2 };

	private final SSLSocketFactory delegate;

	public TLS12SocketFactory(SSLSocketFactory base) {
		this.delegate = base;
	}

	@Override
	public String[] getDefaultCipherSuites() {
		return delegate.getDefaultCipherSuites();
	}

	@Override
	public String[] getSupportedCipherSuites() {
		return delegate.getSupportedCipherSuites();
	}

	@Override
	public Socket createSocket(Socket s, String host, int port, boolean autoClose) throws IOException {
		return patch(delegate.createSocket(s, host, port, autoClose));
	}

	@Override
	public Socket createSocket(String host, int port) throws IOException {
		return patch(delegate.createSocket(host, port));
	}

	@Override
	public Socket createSocket(String host, int port, InetAddress localHost, int localPort)
			throws IOException {
		return patch(delegate.createSocket(host, port, localHost, localPort));
	}

	@Override
	public Socket createSocket(InetAddress host, int port) throws IOException {
		return patch(delegate.createSocket(host, port));
	}

	@Override
	public Socket createSocket(InetAddress address, int port, InetAddress localAddress, int localPort)
			throws IOException {
		return patch(delegate.createSocket(address, port, localAddress, localPort));
	}

	private Socket patch(Socket s) {
		if (s instanceof SSLSocket) ((SSLSocket) s).setEnabledProtocols(TLS_1_2_ONLY);
		return s;
	}
}

TLSv12Fix.java

private static void enableSSL(@NonNull OkHttpClient.Builder builder) {
	ConnectionSpec.Builder spec = new ConnectionSpec.Builder(ConnectionSpec.MODERN_TLS);
	spec.tlsVersions(TlsVersion.TLS_1_2);
	if (Build.VERSION.SDK_INT >= 20) {
		spec.cipherSuites(CipherSuite.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256);
	} else {
		/*
		try { setSSLFactory(builder); }
		catch (Exception ignored) {}
		*/
	}
	builder.connectionSpecs(Collections.singletonList(spec.build()));
}

private static void setSSLFactory(@NonNull OkHttpClient.Builder builder)
		throws NoSuchAlgorithmException, KeyStoreException, KeyManagementException {
	TrustManagerFactory tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
	tmf.init((KeyStore) null);
	X509TrustManager tm = Stream.of(tmf.getTrustManagers()).select(X509TrustManager.class).findFirst().orElse(null);
	if (tm == null) return;
	SSLContext context = SSLContext.getInstance(TLS12SocketFactory.TLS_1_2);
	context.init(null, new TrustManager[] { tm }, null);
	builder.sslSocketFactory(new TLS12SocketFactory(context.getSocketFactory()), tm);
}

Stream is from Lightweight Stream API
You can use other way to get X509TrustManager

Without patching SSLSocketFactory app is crashing