Cannot access testnet-horizon from android below 21

[yosriz]

This issue is specifc to testnet (main net works) and can be evident also from built-in browser, 'There was a network problem'.
The issue is new from about week or 2, maybe a change with certificates?

javax.net.ssl.SSLHandshakeException: javax.net.ssl.SSLProtocolException: SSL handshake aborted: ssl=0x2a0b75c0: Failure in SSL library, usually a protocol error
error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version (external/openssl/ssl/s23_clnt.c:741 0x4dfca6e2:0x00000000)
	at org.apache.harmony.xnet.provider.jsse.OpenSSLSocketImpl.startHandshake(OpenSSLSocketImpl.java:412)
	at okhttp3.internal.connection.RealConnection.connectTls(RealConnection.java:299)
	at okhttp3.internal.connection.RealConnection.establishProtocol(RealConnection.java:268)
	at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:160)
	at okhttp3.internal.connection.StreamAllocation.findConnection(StreamAllocation.java:256)
	at okhttp3.internal.connection.StreamAllocation.findHealthyConnection(StreamAllocation.java:134)
	at okhttp3.internal.connection.StreamAllocation.newStream(StreamAllocation.java:113)
	at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:42)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
	at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
	at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
	at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:125)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
	at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:200)
	at okhttp3.RealCall.execute(RealCall.java:77)
	at kin.core.FakeKinIssuer.createAndFundWithLumens(FakeKinIssuer.java:57)
	at kin.core.FakeKinIssuer.<init>(FakeKinIssuer.java:40)
	at kin.core.KinAccountIntegrationTest.setupKinIssuer(KinAccountIntegrationTest.java:46)
	at java.lang.reflect.Method.invokeNative(Native Method)
	at java.lang.reflect.Method.invoke(Method.java:511)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runners.Suite.runChild(Suite.java:128)
	at org.junit.runners.Suite.runChild(Suite.java:27)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
	at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:58)
	at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:375)
	at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1584)

[bartekn]

This is likely a bug in Android < 4.4: https://stackoverflow.com/a/30302235