Can not be compiled when running on Android for each texture shader 8 Galaxy Tab

Galaxy Tab shader work that follows. SnapDragon QSD8650 (1GHz) I work on Android, the I do not know why.

Why do not compile? Kindly let me know.

Shader "Unlit/MixTextures" { Properties { _MainTex ("Main Base(RGB) Alpha(A)", 2D) = "white" {} _MainTex2 ("Main2 Base(RGB) Alpha(A)", 2D) = "white" {} _MainTex3 ("Main3 Base(RGB) Alpha(A)", 2D) = "white" {} _MainTex4 ("Main4 Base(RGB) Alpha(A)", 2D) = "white" {} _MainTex5 ("Main5 Base(RGB) Alpha(A)", 2D) = "white" {} _MainTex6 ("Main6 Base(RGB) Alpha(A)", 2D) = "white" {} _MainTex7 ("Main7 Base(RGB) Alpha(A)", 2D) = "white" {} // _MainTex8 ("Main8 Base(RGB) Alpha(A)", 2D) = "white" {}

   _TextureOffsetAndSize ("textureOffsetAndSize", Vector) = (0, 0, 0, 0)
   _TextureOffsetAndSize2 ("textureOffsetAndSize2", Vector) = (0, 0, 0, 0)
   _TextureOffsetAndSize3 ("textureOffsetAndSize3", Vector) = (0, 0, 0, 0)
   _TextureOffsetAndSize4 ("textureOffsetAndSize4", Vector) = (0, 0, 0, 0)
   _TextureOffsetAndSize5 ("textureOffsetAndSize5", Vector) = (0, 0, 0, 0)
   _TextureOffsetAndSize6 ("textureOffsetAndSize6", Vector) = (0, 0, 0, 0)
   _TextureOffsetAndSize7 ("textureOffsetAndSize7", Vector) = (0, 0, 0, 0)

// _TextureOffsetAndSize8 ("textureOffsetAndSize8", Vector) = (0, 0, 0, 0)

 }
 SubShader {
     Tags{"Queue"="Transparent"}
     Pass{
         // 顔ベース        
         CGPROGRAM
         //#pragma only_renderers gles
         //#pragma target 3.0
         #pragma vertex vert
         #pragma fragment frag
         #include "UnityCG.cginc"
         
         sampler2D _MainTex;
         sampler2D _MainTex2;
         sampler2D _MainTex3;
         sampler2D _MainTex4;
         sampler2D _MainTex5;
         sampler2D _MainTex6;
         sampler2D _MainTex7;
         sampler2D _MainTex8;
         
         float4 _TextureOffsetAndSize;
         float4 _TextureOffsetAndSize2;
         float4 _TextureOffsetAndSize3;
         float4 _TextureOffsetAndSize4;
         float4 _TextureOffsetAndSize5;
         float4 _TextureOffsetAndSize6;
         float4 _TextureOffsetAndSize7;
         float4 _TextureOffsetAndSize8;

                    
         struct v2f{
             float4 pos : SV_POSITION;
             float2 uv : TEXCOORD0;
         };
         
         float4 _MainTex_ST;
         
         v2f vert(appdata_base v)
         {
             v2f o;
             o.pos = mul(UNITY_MATRIX_MVP, v.vertex);
             o.uv = TRANSFORM_TEX(v.texcoord, _MainTex);
             return o;
         }


         float4 frag( v2f i ) : COLOR {

             float2 defUV = i.uv;
             float2 maskUV = defUV;
             

             // 2
                maskUV.x += _TextureOffsetAndSize.x;
             maskUV.y += _TextureOffsetAndSize.y;
             maskUV.x /= _TextureOffsetAndSize.z;
             maskUV.y /= _TextureOffsetAndSize.w;
             
             float4 addTex = tex2D(_MainTex2, maskUV);
             float4 result = (tex2D(_MainTex, i.uv)*(1-addTex.w) + tex2D(_MainTex2, maskUV)*addTex.w);

             // 3                
                maskUV.x = (defUV.x + _TextureOffsetAndSize2.x)/_TextureOffsetAndSize2.z;
             maskUV.y = (defUV.y + _TextureOffsetAndSize2.y)/_TextureOffsetAndSize2.w;

             addTex = tex2D(_MainTex3, maskUV);
             result = result*(1-addTex.w)+ addTex*addTex.w;

             // 4
                maskUV.x = (defUV.x + _TextureOffsetAndSize3.x)/_TextureOffsetAndSize3.z;
             maskUV.y = (defUV.y + _TextureOffsetAndSize3.y)/_TextureOffsetAndSize3.w;

             addTex = tex2D(_MainTex4, maskUV);
             result = result*(1-addTex.w)+ addTex*addTex.w;
             
             // 5
                maskUV.x = (defUV.x + _TextureOffsetAndSize4.x)/_TextureOffsetAndSize4.z;
             maskUV.y = (defUV.y + _TextureOffsetAndSize4.y)/_TextureOffsetAndSize4.w;

             addTex = tex2D(_MainTex5, maskUV);
             result = result*(1-addTex.w)+ addTex*addTex.w;
             
             // 6
                maskUV.x = (defUV.x + _TextureOffsetAndSize5.x)/_TextureOffsetAndSize5.z;
             maskUV.y = (defUV.y + _TextureOffsetAndSize5.y)/_TextureOffsetAndSize5.w;

             addTex = tex2D(_MainTex6, maskUV);
             result = result*(1-addTex.w)+ addTex*addTex.w;
             
             // 7
                maskUV.x = (defUV.x + _TextureOffsetAndSize6.x)/_TextureOffsetAndSize6.z;
             maskUV.y = (defUV.y + _TextureOffsetAndSize6.y)/_TextureOffsetAndSize6.w;

             addTex = tex2D(_MainTex7, maskUV);
             result = result*(1-addTex.w)+ addTex*addTex.w;
             
             // 8
                maskUV.x = (defUV.x + _TextureOffsetAndSize7.x)/_TextureOffsetAndSize7.z;
             maskUV.y = (defUV.y + _TextureOffsetAndSize7.y)/_TextureOffsetAndSize7.w;

             addTex = tex2D(_MainTex8, maskUV);
             result = result*(1-addTex.w)+ addTex*addTex.w;
             

             return result;
             
             //return (tex2D(_MainTex, i.uv)*(1-addTex.w) + tex2D(_MainTex2, maskUV)*addTex.w);
             // 
             //return half4(_TextureOffsetAndSize.x, _TextureOffsetAndSize.y, _TextureOffsetAndSize.z, 1);                // _TextureOffsetAndSize Output
             //return half4(i.uv.x, i.uv.y, 0, 1);                // uv Output
             //return half4(1, 0, 0, 0);
         }
                     
         ENDCG
     }
 } 
 //Fallback "Diffuse"

}