�O���g�ѓd�b�̔̔���r220 I have a Samsung GSM mobile phone SG R220.���ɂ�GSM��̌g�ѓd�b�̔���O��r220�ł��B It has been working fine for last 6 years.�ŏI�X�V����Ĕ���6�΂܂ł̍�Ƃł��B Last 3-4 days I was unable to get any signal on the phone.�ŏI�X�V3-4��ɔC�ӂ̐M���𓾂邱�Ƃ��ł��܂���ł������ɓd�b�������B I checked that the SIM card is working by using it on another phone and also verified that there is proper reception in my area.���͍�Ƃ��`�F�b�N����SIM�J�[�h��ʂ̓d�b�Ŋm�F�d�b���g�p���Ă�������؂��A�܂��K�؂ȃ��Z�v�V�����ɂ͎��̃G���A�ł��B So I rightly suspected that the problem was with the phone itself.�����瓖�R�^����̂́A���́A�d�b�Ŋm�F�d�b���̂��̂ł��B I visited the Samsung service center only to be told that they will change the battery (which is also the back cover) which will "probably" improve the performance.�O���T�[�r�X�Z���^�[��K�₵�A���Ɍ����Ă��Ă݂̂�ύX����ɂ́A�o�b�e���[�i����͂܂��A���\���j�ɂ́A "�����炭"�̃p�t�H�[�}���X����P���܂��B I grew suspicious because there was nothing wrong with the battery, it has been working fine for last 6 years.���s�R�Ȑ��������݂��邽�߁A�o�b�e���[�́A�����������ƂŁA����͍Ō��6�N�ԂɎ��g�񔱋��ł��B The battery worked without any issues even after being inactive and without charge for over a year!�o�b�e���[�̖����Ȃ��d������\���Ƃ�����1�N�ȏ�𐿋����邱�ƂȂ��I So I decided to hack my cell phone.�����玄�̌g�ѓd�b���n�b�N���Ƃ����߂��B

I had the required screw-driver (special ones) to pry open the phone.���́A�l�W���ߎ��̃h���C�o���K�v�ƂȂ�܂��i���ʂȂ��́j������������̓d�b�ł��B But before starting I wanted to clean the contacts of the antenna.�������A�N������O�ɁA�A��������ꂢ�ɂ����������̂́A�A���e�i�ł��B So I took the connecting pin of my multimeter connector (even a regular safety-pin will do fine) and started scratching the base of the antenna.�����玄�̃}���`���[�^�́A�R�l�N�^�̐ڑ��[�q�i�s���̈��S�������I�ɂ͔����j�ƁA�A���e�i�̊�ɎC�菝���J�n���܂��B In Calcutta nowadays it is very hot and humid, so I suspected that it could be damp related problem.����̃J���J�b�^���Ƃ͔��ɍ��������̂��߁A���̋^�������������Ƃ��ł���֘A�������ł��B Immediately the signal strength increased by 3-4 bars and went near its maximum from zero previously.������3-4�̐M�����x�������A�o�[�Ƃ́A�ȑO�͎��̃[������A�ő�̋߂��ł��B So I went for more scratching.�ڍ׈���������肷�邽�߂ɍs�����B And surprisingly enough my cell-phone now has better reception than ever before.�Ƌ����قǏ\���Ɏ��̌g�ѓd�b�����������Z�v�V�����ɂ͂���܂ňȏ��サ�܂��B All it needed was some scratching behind the ears ..�K�v�ɉ����Ă��ׂĂ̂��Ƃ́A�����‚��̎C�菝�̔w��Ɏ�.. err in the hole where the antenna is lodged.�G���[�́A���́A�A���e�i���\�����ĂĂ��܂��B While I am not sure if the same trick will work with every cell phone, especially the ones with hidden antennas, I think it is worth the effort to clean the antenna and its base as far as it is accessible for better reception.�����킩��Ȃ��ꍇ�́A�����g���b�N�����삷�邷�ׂĂ̌g�ѓd�b�A���ɃA���e�i�B���ꂽ���̂��A�Ǝv�����Ƃ͓w�͂��鉿�l�̂���A���e�i�Ƃ��̊�n�����ꂢ�ɂ��邱�Ƃ��A�N�Z�X�”\�Ȍ���ǂ����Z�v�V�����ł��B