Can't apply UV map to SCNMaterial texture

I'm getting wrong texture mapping with following code:

size_t numberOfFaces = mesh->mIndices.size() / 3;
size_t numberOfVertices = mesh->mVertices.size();
NSLog(@"number of faces: %d, vertices: %d", (int)numberOfFaces, (int)numberOfVertices);

for (size_t i = 0; i < numberOfVertices; i++)
{
    Vertex v;

    v.x = mesh->mVertices[i].x;
    v.y = mesh->mVertices[i].y;
    v.z = mesh->mVertices[i].z;

    v.nx = mesh->mNormals[i].x;
    v.ny = mesh->mNormals[i].y;
    v.nz = mesh->mNormals[i].z;

    v.u = mesh->mTexCoords[i].u;
    v.v = mesh->mTexCoords[i].v;

    vertices.push_back(v);
}

NSData *data = [NSData dataWithBytes:vertices.data() length:sizeof(Vertex) * vertices.size()];

SCNGeometrySource *verticesSource = [SCNGeometrySource geometrySourceWithData:data
                                                                     semantic:SCNGeometrySourceSemanticVertex
                                                                  vectorCount:numberOfVertices
                                                              floatComponents:YES
                                                          componentsPerVector:3
                                                            bytesPerComponent:sizeof(float)
                                                                   dataOffset:offsetof(Vertex, x)
                                                                   dataStride:sizeof(Vertex)];
SCNGeometrySource *normalsSource = [SCNGeometrySource geometrySourceWithData:data
                                                                    semantic:SCNGeometrySourceSemanticNormal
                                                                 vectorCount:numberOfVertices
                                                             floatComponents:YES
                                                         componentsPerVector:3
                                                           bytesPerComponent:sizeof(float)
                                                                  dataOffset:offsetof(Vertex, nx)
                                                                  dataStride:sizeof(Vertex)];
SCNGeometrySource *coordsSource = [SCNGeometrySource geometrySourceWithData:data
                                                                    semantic:SCNGeometrySourceSemanticTexcoord
                                                                 vectorCount:numberOfVertices
                                                             floatComponents:YES
                                                         componentsPerVector:2
                                                           bytesPerComponent:sizeof(float)
                                                                  dataOffset:offsetof(Vertex, u)
                                                                  dataStride:sizeof(Vertex)];

NSData *elements = [NSData dataWithBytes:mesh->mIndices.data() length:sizeof(int) * mesh->mIndices.size()];
SCNGeometryElement *element = [SCNGeometryElement geometryElementWithData:elements
                                                            primitiveType:SCNGeometryPrimitiveTypeTriangles
                                                           primitiveCount:numberOfFaces
                                                            bytesPerIndex:sizeof(int)];

SCNGeometry *geometry = [SCNGeometry geometryWithSources:@[verticesSource, normalsSource, coordsSource] elements:@[element]];

SCNMaterial *material = [SCNMaterial new];

NSString *name = [[file.lastPathComponent stringByDeletingPathExtension] stringByAppendingPathExtension:@"jpg"];
NSString *textureFile = [[file stringByDeletingLastPathComponent] stringByAppendingPathComponent:name];
material.diffuse.contents = [UIImage imageWithContentsOfFile:textureFile];

material.specular.contents = [UIColor whiteColor];
geometry.firstMaterial = material;

Texture has wrong position on model. Original viewer works fine with file so something wrong with SceneKit code.