That's not very likely. It's either a device/driver issue or some flaw in the implementation itself. Please try adjusting Config.specPow and report back with the results.

There's no need to set any parameters in the default shaders. Their purpose is to mimic GL 1.x behaviour automatically. I'm unsure why this doesn't happen here though.

Here's a test case that I've hacked together that show specular lighting on a sphere in ES 2.0. Maybe you can run that on your device with and without specular lighting enabled and report the results.

package com.threed.jpct.example;

import java.lang.reflect.Field;

import javax.microedition.khronos.egl.EGLConfig;
import javax.microedition.khronos.opengles.GL10;

import android.app.Activity;
import android.opengl.GLSurfaceView;
import android.os.Bundle;
import android.util.Log;

import com.threed.jpct.Camera;
import com.threed.jpct.FrameBuffer;
import com.threed.jpct.Light;
import com.threed.jpct.Logger;
import com.threed.jpct.Object3D;
import com.threed.jpct.Primitives;
import com.threed.jpct.RGBColor;
import com.threed.jpct.SimpleVector;
import com.threed.jpct.Texture;
import com.threed.jpct.World;
import com.threed.jpct.util.MemoryHelper;

public class HelloWorld extends Activity {

private static HelloWorld master = null;

private GLSurfaceView mGLView;
private MyRenderer renderer = null;
private FrameBuffer fb = null;
private World world = null;

private int fps = 0;

private Light sun = null;

private GL10 lastGl = null;

private RGBColor back = new RGBColor(50, 50, 10);
public Object3D obj;
public Texture texture;

protected void onCreate(Bundle savedInstanceState) {

Logger.log("onCreate");

if (master != null) {
copy(master);
}

super.onCreate(savedInstanceState);

mGLView = new GLSurfaceView(getApplication());
mGLView.setEGLContextClientVersion(2);
mGLView.setPreserveEGLContextOnPause(true);

renderer = new MyRenderer();
mGLView.setRenderer(renderer);
setContentView(mGLView);
}

@Override
protected void onPause() {
super.onPause();
mGLView.onPause();
}

@Override
protected void onResume() {
super.onResume();
mGLView.onResume();
}

@Override
protected void onStop() {
super.onStop();
System.exit(0);
}

private void copy(Object src) {
try {
Logger.log("Copying data from master Activity!");
Field[] fs = src.getClass().getDeclaredFields();
for (Field f : fs) {
f.setAccessible(true);
f.set(this, f.get(src));
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}

protected boolean isFullscreenOpaque() {
return true;
}

class MyRenderer implements GLSurfaceView.Renderer {

private long time = System.currentTimeMillis();

public MyRenderer() {
}

public void onSurfaceChanged(GL10 gl, int w, int h) {

// Renew the frame buffer
if (lastGl != gl) {
Log.i("HelloWorld", "Init buffer");
if (fb != null) {
fb.dispose();
}
fb = new FrameBuffer(w, h);
fb.setVirtualDimensions(fb.getWidth(), fb.getHeight());
lastGl = gl;
} else {
fb.resize(w, h);
fb.setVirtualDimensions(w, h);
}

if (master == null) {
world = new World();
world.setAmbientLight(70, 70, 70);

sun = new Light(world);
sun.setIntensity(200, 200, 200);

obj = Primitives.getSphere(50,15);
world.addObject(obj);
obj.translate(0, 0, 0);
obj.build();

// Specular lighting
obj.setSpecularLighting(true);

Camera cam = world.getCamera();
cam.moveCamera(Camera.CAMERA_MOVEOUT, 35);
cam.lookAt(SimpleVector.ORIGIN);

SimpleVector sv = new SimpleVector();
sv.set(SimpleVector.ORIGIN);
sv.y -= 70;
sv.z -= 70;
sun.setPosition(sv);
MemoryHelper.compact();

if (master == null) {
Logger.log("Saving master Activity!");
master = HelloWorld.this;
}
}
}

public void onSurfaceCreated(GL10 gl, EGLConfig config) {
//
}

public void onDrawFrame(GL10 gl) {
SimpleVector sv=sun.getPosition();
sv.rotateY(0.02f);
sun.setPosition(sv);

fb.clear(back);
world.renderScene(fb);
world.draw(fb);
fb.display();

if (System.currentTimeMillis() - time >= 1000) {
Logger.log(fps + "fps");
fps = 0;
time = System.currentTimeMillis();
}
fps++;
}
}

public static HelloWorld getApp() {
return master;
}
}


Edit: I assume that you are using the latest version of jPCT-AE?

Which parameters?

It might also help to know what exactly this "mobile phone" is!? Model number, Android version?

I'm not sure what this number represents, but if it's the size, it might not be unreasonable, if you have many smaller models and/or smaller parts of the model that are using different textures.

You can forget about the simulator in OpenGL ES 2.0 mode. At least that was my experience, so I stopped using it altogether. There are some alternative Android emulators available, maybe one of them works better.

Good to hear that!