Stencil buffer with lightmaps on Android

Hi guys, I am new to shader and recently I have been trying to make portal effect using stencil buffer, everything works fine until I started to bake lightmaps. For some reason my shader doesn't work if I try to bake lightmaps and build it on Android, but it works fine in the Editor, is there something wrong with my shader?

Code (CSharp):

1. Shader "Custom/MobileDiffuse" {
2. Properties {
3.     _MainTex ("Base (RGB)", 2D) = "white" {}
4.     [Enum(CompareFunction)] _StencilComp("Stencil Comp", int) = 3
5. }
6. SubShader {
7.     Tags { "RenderType"="Opaque" }
8.     LOD 100
9.  
10.     Stencil
11.     {
12.         Ref 1
13.         Comp [_StencilComp]
14.     }
15.  
16. CGPROGRAM
17. #pragma surface surf Lambert noforwardadd
18.  
19. sampler2D _MainTex;
20.  
21. struct Input {
22.     float2 uv_MainTex;
23. };
24.  
25. void surf (Input IN, inout SurfaceOutput o) {
26.     fixed4 c = tex2D(_MainTex, IN.uv_MainTex);
27.     o.Albedo = c.rgb;
28.     o.Alpha = c.a;
29. }
30. ENDCG
31. }
32.  
33. Fallback "Mobile/VertexLit"
34. }

Code (CSharp):

1. Shader "Custom/PortalMask"
2. {
3.     SubShader
4.     {
5.         Tags { "RenderType"="Opaque" }
6.         LOD 100
7.         Zwrite Off
8.         ColorMask 0
9.  
10.         Pass
11.         {
12.             Stencil{
13.                 Ref 1
14.                 Comp always
15.                 Pass replace
16.             }
17.  
18.             CGPROGRAM
19.             #pragma vertex vert
20.             #pragma fragment frag
21.        
22.             #include "UnityCG.cginc"
23.  
24.             struct appdata
25.             {
26.                 float4 vertex : POSITION;
27.             };
28.  
29.             struct v2f
30.             {
31.                 float4 vertex : SV_POSITION;
32.             };
33.  
34.             v2f vert (appdata v)
35.             {
36.                 v2f o;
37.                 o.vertex = UnityObjectToClipPos(v.vertex);
38.                 return o;
39.             }
40.        
41.             fixed4 frag (v2f i) : SV_Target
42.             {
43.                 return fixed4(0.0, 0.0, 0.0, 0.0);
44.             }
45.             ENDCG
46.         }
47.     }
48. }