[Solved]-How can i remove extra space in mobile app?-Highcharts

It would be better to see the resulting page source code, so I could identify the elements' separate ID's or classes, but here's one suggestion. In your code for the chart you have:

  pie: {
    dataLabels: {
      enabled: false
    },
    shadow: true,
    center: ['50%', '50%'],
    borderWidth: 0 // < set this option
  }

Try changing

center: ['50%', '50%'], to

center: ['50%', '25%'], or

center: ['50%', '75%'],

...and where you have:

subtitle: {
  text: 'Rs 25000',
  align: 'center',
  verticalAlign: 'middle',
  y: 10,
  x : 1,
  style : {
    color: '#fff',
    fontSize: '1.2em'
  },
},

You could try changing

  verticalAlign: 'middle',

to verticalAlign: 'bottom',